diff --git a/android/ant/apk-codegen.xml b/android/ant/apk-codegen.xml
deleted file mode 100644
index 78b8f686c..000000000
--- a/android/ant/apk-codegen.xml
+++ /dev/null
@@ -1,98 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!--
-    Copyright (C) 2005-2008 The Android Open Source Project
-
-    Licensed under the Apache License, Version 2.0 (the "License");
-    you may not use this file except in compliance with the License.
-    You may obtain a copy of the License at
-
-         http://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
--->
-
-<project default="-code-gen">
-  <property name="verbose" value="false" />
-
-  <property name="out.dir" location="${OUT_DIR}" />
-  <property name="out.absolute.dir" location="${out.dir}" />
-  <property name="out.res.absolute.dir" location="${out.dir}/res" />
-  <property name="gen.absolute.dir" value="${out.dir}/gen"/>
-
-  <!-- tools location -->
-  <property name="sdk.dir" location="${ANDROID_SDK_ROOT}"/>
-  <property name="android.sdk.tools.dir" location="${ANDROID_SDK_TOOLS}" />
-  <property name="aapt" location="${android.sdk.tools.dir}/aapt" />
-  <property name="project.target.android.jar" location="${ANDROID_SDK_JAR}" />
-
-  <!-- jar file from where the tasks are loaded -->
-  <path id="android.antlibs">
-      <pathelement path="${sdk.dir}/tools/lib/ant-tasks.jar" />
-  </path>
-
-  <!-- Custom tasks -->
-  <taskdef resource="anttasks.properties" classpathref="android.antlibs" />
-
-  <!--
-    Include additional resource folders in the apk, e.g. content/.../res.  We
-    list the res folders in project.library.res.folder.path and the
-    corresponding java packages in project.library.packages, which must be
-    semicolon-delimited while ADDITIONAL_RES_PACKAGES is space-delimited, hence
-    the replacestring filterchain task.
-  -->
-  <path id="project.library.res.folder.path">
-    <filelist files="${ADDITIONAL_RES_DIRS}"/>
-  </path>
-  <path id="project.library.bin.r.file.path">
-    <filelist files="${ADDITIONAL_R_TEXT_FILES}"/>
-  </path>
-
-  <loadresource property="project.library.packages">
-    <propertyresource name="ADDITIONAL_RES_PACKAGES"/>
-    <filterchain>
-      <replacestring from=" " to=";"/>
-    </filterchain>
-  </loadresource>
-  <!-- Set to empty if not set by the loadresource above -->
-  <property name="project.library.packages" value=""/>
-
-  <property name="resource.absolute.dir" value="${RESOURCE_DIR}"/>
-
-  <property name="manifest.file" value="${ANDROID_MANIFEST}" />
-  <property name="manifest.abs.file" location="${manifest.file}" />
-
-  <!-- Intermediate files -->
-  <property name="resource.package.file.name" value="${APK_NAME}.ap_" />
-
-  <property name="aapt.ignore.assets" value="" />
-
-  <!-- Code Generation: compile resources (aapt -> R.java), aidl -->
-  <target name="-code-gen">
-      <mkdir dir="${out.absolute.dir}" />
-      <mkdir dir="${out.res.absolute.dir}" />
-      <mkdir dir="${gen.absolute.dir}" />
-
-      <aapt executable="${aapt}"
-              command="package"
-              verbose="${verbose}"
-              manifest="${manifest.abs.file}"
-              androidjar="${project.target.android.jar}"
-              rfolder="${gen.absolute.dir}"
-              nonConstantId="false"
-              libraryResFolderPathRefid="project.library.res.folder.path"
-              libraryPackagesRefid="project.library.packages"
-              libraryRFileRefid="project.library.bin.r.file.path"
-              ignoreAssets="${aapt.ignore.assets}"
-              binFolder="${out.absolute.dir}"
-              proguardFile="${out.absolute.dir}/proguard.txt">
-          <res path="${out.res.absolute.dir}" />
-          <res path="${resource.absolute.dir}" />
-      </aapt>
-
-      <touch file="${STAMP}" />
-  </target>
-</project>
diff --git a/android/ant/apk-package-resources.xml b/android/ant/apk-package-resources.xml
index 147ebc4cb..b2e16069f 100644
--- a/android/ant/apk-package-resources.xml
+++ b/android/ant/apk-package-resources.xml
@@ -51,20 +51,6 @@
   <property name="version.code" value="${APP_MANIFEST_VERSION_CODE}"/>
   <property name="version.name" value="${APP_MANIFEST_VERSION_NAME}"/>
 
-  <property name="aapt.resource.filter" value="" />
-  <!-- 'aapt.ignore.assets' is the list of file patterns to ignore under /res and /assets.
-         Default is "!.svn:!.git:.*:<dir>_*:!CVS:!thumbs.db:!picasa.ini:!*.scc:*~"
-
-         Overall patterns syntax is:
-           [!][<dir>|<file>][*suffix-match|prefix-match*|full-match]:more:patterns...
-
-         - The first character flag ! avoids printing a warning.
-         - Pattern can have the flag "<dir>" to match only directories
-           or "<file>" to match only files. Default is to match both.
-         - Match is not case-sensitive.
-  -->
-  <property name="aapt.ignore.assets" value="" />
-
   <!--
       Include additional resource folders in the apk, e.g. content/.../res.  We
       list the res folders in project.library.res.folder.path and the
@@ -96,19 +82,7 @@
   <!-- Intermediate files -->
   <property name="resource.package.file.name" value="${APK_NAME}.ap_" />
 
-  <target name="-crunch">
-    <!-- Updates the pre-processed PNG cache -->
-    <exec executable="${aapt}" taskName="crunch">
-      <arg value="crunch" />
-      <arg value="-v" />
-      <arg value="-S" />
-      <arg path="${resource.absolute.dir}" />
-      <arg value="-C" />
-      <arg path="${out.res.absolute.dir}" />
-    </exec>
-  </target>
-
-  <target name="-package-resources" depends="-crunch">
+  <target name="-package-resources">
     <aapt
         executable="${aapt}"
         command="package"
@@ -121,13 +95,13 @@
         apkfolder="${out.absolute.dir}"
         nocrunch="${build.packaging.nocrunch}"
         resourcefilename="${resource.package.file.name}"
-        resourcefilter="${aapt.resource.filter}"
+        resourcefilter=""
         libraryResFolderPathRefid="project.library.res.folder.path"
         libraryPackagesRefid="project.library.packages"
         libraryRFileRefid="project.library.bin.r.file.path"
         previousBuildType=""
         buildType="${build.target}"
-        ignoreAssets="${aapt.ignore.assets}">
+        ignoreAssets="">
       <res path="${out.res.absolute.dir}" />
       <res path="${resource.absolute.dir}" />
       <!-- <nocompress /> forces no compression on any files in assets or res/raw -->
diff --git a/android/gyp/process_resources.py b/android/gyp/process_resources.py
index 9bad5c1bc..c57168b69 100755
--- a/android/gyp/process_resources.py
+++ b/android/gyp/process_resources.py
@@ -8,6 +8,7 @@
 
 import optparse
 import os
+import re
 import shlex
 import shutil
 
@@ -24,10 +25,10 @@ def ParseArgs():
   parser.add_option('--android-sdk-tools',
                     help='path to the Android SDK build tools folder')
   parser.add_option('--R-dir', help='directory to hold generated R.java')
-  parser.add_option('--res-dirs',
+  parser.add_option('--dependencies-res-dirs',
                     help='directories containing resources to be packaged')
-  parser.add_option('--crunch-input-dir',
-                    help='directory containing images to be crunched')
+  parser.add_option('--resource-dir',
+                    help='directory containing this target\'s resources.')
   parser.add_option('--crunch-output-dir',
                     help='directory to hold crunched resources')
   parser.add_option('--non-constant-id', action='store_true')
@@ -35,19 +36,60 @@ def ParseArgs():
   parser.add_option('--android-manifest', help='AndroidManifest.xml path')
   parser.add_option('--stamp', help='File to touch on success')
 
+  parser.add_option(
+      '--extra-res-packages',
+      help='Additional package names to generate R.java files for')
+  parser.add_option(
+      '--extra-r-text-files',
+      help='For each additional package, the R.txt file should contain a '
+      'list of resources to be included in the R.java file in the format '
+      'generated by aapt')
+
   (options, args) = parser.parse_args()
 
   if args:
     parser.error('No positional arguments should be given.')
 
   # Check that required options have been provided.
-  required_options = ('android_sdk', 'android_sdk_tools', 'R_dir',
-                      'res_dirs', 'crunch_input_dir', 'crunch_output_dir')
+  required_options = (
+      'android_sdk',
+      'android_sdk_tools',
+      'android_manifest',
+      'dependencies_res_dirs',
+      'resource_dir',
+      'crunch_output_dir',
+      'R_dir',
+      )
   build_utils.CheckOptions(options, parser, required=required_options)
 
   return options
 
 
+def CreateExtraRJavaFiles(
+    r_dir, extra_packages, extra_r_text_files):
+  if len(extra_packages) != len(extra_r_text_files):
+    raise Exception('--extra-res-packages and --extra-r-text-files'
+                    'should have the same length')
+
+  java_files = build_utils.FindInDirectory(r_dir, "R.java")
+  if len(java_files) != 1:
+    return
+  r_java_file = java_files[0]
+  r_java_contents = open(r_java_file).read()
+
+  for package in extra_packages:
+    package_r_java_dir = os.path.join(r_dir, *package.split('.'))
+    build_utils.MakeDirectory(package_r_java_dir)
+    package_r_java_path = os.path.join(package_r_java_dir, 'R.java')
+    open(package_r_java_path, 'w').write(
+        re.sub(r'package [.\w]*;', 'package %s;' % package, r_java_contents))
+    # TODO(cjhopman): These extra package's R.java files should be filtered to
+    # only contain the resources listed in their R.txt files. At this point, we
+    # have already compiled those other libraries, so doing this would only
+    # affect how the code in this .apk target could refer to the resources.
+
+
+
 def MoveImagesToNonMdpiFolders(res_root):
   """Move images from drawable-*-mdpi-* folders to drawable-* folders.
 
@@ -95,6 +137,7 @@ def main():
   android_jar = os.path.join(options.android_sdk, 'android.jar')
   aapt = os.path.join(options.android_sdk_tools, 'aapt')
 
+  build_utils.DeleteDirectory(options.R_dir)
   build_utils.MakeDirectory(options.R_dir)
 
   # Generate R.java. This R.java contains non-final constants and is used only
@@ -110,21 +153,30 @@ def main():
                      '-I', android_jar,
                      '--output-text-symbols', options.R_dir,
                      '-J', options.R_dir]
-  res_dirs = shlex.split(options.res_dirs)
-  for res_dir in res_dirs:
+  all_res_dirs = ([options.resource_dir]
+                  + shlex.split(options.dependencies_res_dirs))
+  for res_dir in all_res_dirs:
     package_command += ['-S', res_dir]
   if options.non_constant_id:
     package_command.append('--non-constant-id')
   if options.custom_package:
     package_command += ['--custom-package', options.custom_package]
+
   build_utils.CheckOutput(package_command)
 
+  if options.extra_res_packages:
+    CreateExtraRJavaFiles(
+        options.R_dir,
+        build_utils.ParseGypList(options.extra_res_packages),
+        build_utils.ParseGypList(options.extra_r_text_files))
+
   # Crunch image resources. This shrinks png files and is necessary for 9-patch
   # images to display correctly.
+  build_utils.DeleteDirectory(options.crunch_output_dir)
   build_utils.MakeDirectory(options.crunch_output_dir)
   aapt_cmd = [aapt,
               'crunch',
-              '-S', options.crunch_input_dir,
+              '-S', options.resource_dir,
               '-C', options.crunch_output_dir]
   build_utils.CheckOutput(aapt_cmd, fail_func=DidCrunchFail)
 
diff --git a/android/gyp/util/build_utils.py b/android/gyp/util/build_utils.py
index 607f9be27..36c83193c 100644
--- a/android/gyp/util/build_utils.py
+++ b/android/gyp/util/build_utils.py
@@ -59,7 +59,7 @@ def CheckOptions(options, parser, required=None):
   if not required:
     return
   for option_name in required:
-    if not getattr(options, option_name):
+    if getattr(options, option_name) is None:
       parser.error('--%s is required' % option_name.replace('_', '-'))
 
 def WriteJson(obj, path, only_if_changed=False):
diff --git a/java.gypi b/java.gypi
index 8f61395cb..ce778b1ae 100644
--- a/java.gypi
+++ b/java.gypi
@@ -156,8 +156,8 @@
             'android_manifest': '<(DEPTH)/build/android/AndroidManifest.xml',
             # Include the dependencies' res dirs so that references to
             # resources in dependencies can be resolved.
-            'all_res_dirs': ['<@(res_input_dirs)',
-                             '>@(dependencies_res_input_dirs)',],
+            'dependencies_res_dirs': ['<@(res_extra_dirs)',
+                                      '>@(dependencies_res_input_dirs)',],
             # Write the inputs list to a file, so that its mtime is updated when
             # the list of inputs changes.
             'inputs_list_file': '>|(java_resources.<(_target_name).gypcmd >@(resource_input_paths) >@(dependencies_res_files))'
@@ -177,8 +177,8 @@
             '--android-sdk', '<(android_sdk)',
             '--android-sdk-tools', '<(android_sdk_tools)',
             '--R-dir', '<(R_dir)',
-            '--res-dirs', '>(all_res_dirs)',
-            '--crunch-input-dir', '>(res_dir)',
+            '--dependencies-res-dirs', '>(dependencies_res_dirs)',
+            '--resource-dir', '<(res_dir)',
             '--crunch-output-dir', '<(res_crunched_dir)',
             '--android-manifest', '<(android_manifest)',
             '--non-constant-id',
diff --git a/java_apk.gypi b/java_apk.gypi
index d083afc08..b45397423 100644
--- a/java_apk.gypi
+++ b/java_apk.gypi
@@ -433,8 +433,13 @@
   ],
   'actions': [
     {
-      'action_name': 'ant_codegen_<(_target_name)',
-      'message': 'Generating R.java for <(_target_name)',
+      'action_name': 'process_resources',
+      'message': 'processing resources for <(_target_name)',
+      'variables': {
+        # Write the inputs list to a file, so that its mtime is updated when
+        # the list of inputs changes.
+        'inputs_list_file': '>|(apk_codegen.<(_target_name).gypcmd >@(additional_input_paths) >@(resource_input_paths))',
+      },
       'conditions': [
         ['is_test_apk == 1', {
           'variables': {
@@ -443,15 +448,9 @@
           }
         }],
       ],
-      'variables': {
-        # Write the inputs list to a file, so that its mtime is updated when
-        # the list of inputs changes.
-        'inputs_list_file': '>|(apk_codegen.<(_target_name).gypcmd >@(additional_input_paths) >@(resource_input_paths))'
-      },
       'inputs': [
-        '<(DEPTH)/build/android/ant/apk-codegen.xml',
         '<(DEPTH)/build/android/gyp/util/build_utils.py',
-        '<(DEPTH)/build/android/gyp/ant.py',
+        '<(DEPTH)/build/android/gyp/process_resources.py',
         '<(android_manifest_path)',
         '>@(additional_input_paths)',
         '>@(resource_input_paths)',
@@ -461,23 +460,22 @@
         '<(codegen_stamp)',
       ],
       'action': [
-        'python', '<(DEPTH)/build/android/gyp/ant.py',
-        '-quiet',
-        '-DADDITIONAL_RES_DIRS=>(additional_res_dirs)',
-        '-DADDITIONAL_RES_PACKAGES=>(additional_res_packages)',
-        '-DADDITIONAL_R_TEXT_FILES=>(additional_R_text_files)',
-        '-DANDROID_MANIFEST=<(android_manifest_path)',
-        '-DANDROID_SDK_JAR=<(android_sdk_jar)',
-        '-DANDROID_SDK_ROOT=<(android_sdk_root)',
-        '-DANDROID_SDK_VERSION=<(android_sdk_version)',
-        '-DANDROID_SDK_TOOLS=<(android_sdk_tools)',
-        '-DOUT_DIR=<(intermediate_dir)',
-        '-DRESOURCE_DIR=<(resource_dir)',
+        'python', '<(DEPTH)/build/android/gyp/process_resources.py',
+        '--android-sdk', '<(android_sdk)',
+        '--android-sdk-tools', '<(android_sdk_tools)',
 
-        '-DSTAMP=<(codegen_stamp)',
-        '-Dbasedir=.',
-        '-buildfile',
-        '<(DEPTH)/build/android/ant/apk-codegen.xml',
+        '--android-manifest', '<(android_manifest_path)',
+        '--dependencies-res-dirs', '>(additional_res_dirs)',
+
+        '--extra-res-packages', '>(additional_res_packages)',
+        '--extra-r-text-files', '>(additional_R_text_files)',
+
+        '--resource-dir', '<(resource_dir)',
+        '--crunch-output-dir', '<(intermediate_dir)/res',
+
+        '--R-dir', '<(intermediate_dir)/gen',
+
+        '--stamp', '<(codegen_stamp)',
       ],
     },
     {