Android: Add owned resources to android studio

Include owned resources and unzip owned resource zips in android studio
generated gradle projects. This allows a res directory to show up for
each project.

BUG=682846

Review-Url: https://codereview.chromium.org/2667023002
Cr-Original-Commit-Position: refs/heads/master@{#447764}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 9af0deb4bd0d2eb6ec47063ce2a024641e0da52d

android/gradle/android.jinja

@@ -13,6 +13,11 @@
             jniLibs.srcDirs = [
 {% for path in variables.jni_libs %}
                 "{{ path }}",
+{% endfor %}
+            ]
+            res.srcDirs = [
+{% for path in variables.res_dirs %}
+                "{{ path }}",
 {% endfor %}
             ]
         }

android/gradle/generate_gradle.py

@@ -34,6 +34,7 @@ _JAVA_SUBDIR = 'symlinked-java'
 _SRCJARS_SUBDIR = 'extracted-srcjars'
 _JNI_LIBS_SUBDIR = 'symlinked-libs'
 _ARMEABI_SUBDIR = 'armeabi'
+_RES_SUBDIR = 'extracted-res'
 
 _DEFAULT_TARGETS = [
     # TODO(agrieve): Requires alternate android.jar to compile.
@@ -212,6 +213,17 @@ class _ProjectContextGenerator(object):
           os.path.join(self.EntryOutputDir(entry), _SRCJARS_SUBDIR))
     return java_dirs
 
+  def _GenResDirs(self, entry):
+    res_dirs = list(entry.DepsInfo().get('owned_resources_dirs', []))
+    zips = entry.DepsInfo().get('owned_resources_zips')
+    if zips:
+      # These are generated resources that should not be modified.
+      res_dir = os.path.join(self.EntryOutputDir(entry), _RES_SUBDIR)
+      for zip_path in _RebasePath(zips):
+        _ExtractFile(zip_path, res_dir)
+      res_dirs.append(res_dir)
+    return res_dirs
+
   def _Relativize(self, entry, paths):
     return _RebasePath(paths, self.EntryOutputDir(entry))
 
@@ -240,6 +252,7 @@ class _ProjectContextGenerator(object):
         entry, android_test_manifest)
     variables['java_dirs'] = self._Relativize(entry, self._GenJavaDirs(entry))
     variables['jni_libs'] = self._Relativize(entry, self._GenJniLibs(entry))
+    variables['res_dirs'] = self._Relativize(entry, self._GenResDirs(entry))
     deps = [_ProjectEntry.FromBuildConfigPath(p)
             for p in entry.Gradle()['dependent_android_projects']]
     variables['android_project_deps'] = [d.ProjectName() for d in deps]
@@ -429,6 +442,12 @@ def _GenerateSettingsGradle(project_entries):
   return '\n'.join(lines)
 
 
+def _ExtractFile(zip_path, extracted_path):
+  logging.info('Extracting %s to %s', zip_path, extracted_path)
+  with zipfile.ZipFile(zip_path) as z:
+    z.extractall(extracted_path)
+
+
 def _ExtractSrcjars(entry_output_dir, srcjar_tuples):
   """Extracts all srcjars to the directory given by the tuples."""
   extracted_paths = set(s[1] for s in srcjar_tuples)
@@ -437,9 +456,7 @@ def _ExtractSrcjars(entry_output_dir, srcjar_tuples):
     shutil.rmtree(extracted_path, True)
 
   for srcjar_path, extracted_path in srcjar_tuples:
-    logging.info('Extracting %s to %s', srcjar_path, extracted_path)
-    with zipfile.ZipFile(srcjar_path) as z:
-      z.extractall(extracted_path)
+    _ExtractFile(srcjar_path, extracted_path)
 
 
 def _FindAllProjectEntries(main_entries):