Learned that mini_installer's linker settings cannot actually be shared

by everyone else.
Separated mini_installer into its own gyp file and isolated it from
several common settings.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/150045

git-svn-id: http://src.chromium.org/svn/trunk/src/build@19561 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

common.gypi

@@ -60,6 +60,11 @@
     # Once all vsprops settings are migrated into gyp, this can go away.
     'msvs_use_common_release%': 1,
 
+    # TODO(bradnelson): eliminate this when possible.
+    # To allow local gyp files to override additional linker options for msvs.
+    # Yes(1) means set use the common linker options.
+    'msvs_use_common_linker_extras%': 1,
+
     # TODO(sgk): eliminate this if possible.
     # It would be nicer to support this via a setting in 'target_defaults'
     # in chrome/app/locales/locales.gypi overriding the setting in the
@@ -76,7 +81,7 @@
     'toolkit_views%': 0,
 
     'linux2%': 0,
-    
+
     'chrome_personalization%': 0,
   },
   'target_defaults': {
@@ -483,8 +488,6 @@
               ['<(DEPTH)/third_party/platformsdk_win2008_6_1/files/Lib'],
           },
           'VCLinkerTool': {
-            'AdditionalOptions':
-              '/safeseh:NO /dynamicbase:NO /ignore:4199 /ignore:4221 /nxcompat',
             'AdditionalDependencies': [
               'wininet.lib',
               'version.lib',
@@ -496,11 +499,6 @@
             ],
             'AdditionalLibraryDirectories':
               ['<(DEPTH)/third_party/platformsdk_win2008_6_1/files/Lib'],
-            'DelayLoadDLLs': [
-              'dbghelp.dll',
-              'dwmapi.dll',
-              'uxtheme.dll',
-            ],
             'GenerateDebugInformation': 'true',
             'MapFileName': '$(OutDir)\\$(TargetName).map',
             'ImportLibrary': '$(OutDir)\\lib\\$(TargetName).lib',
@@ -545,6 +543,17 @@
         ],
       },
     }],
+    ['msvs_use_common_linker_extras', {
+      'VCLinkerTool': {
+        'AdditionalOptions':
+          '/safeseh /dynamicbase /ignore:4199 /ignore:4221 /nxcompat',
+        'DelayLoadDLLs': [
+          'dbghelp.dll',
+          'dwmapi.dll',
+          'uxtheme.dll',
+        ],
+      },
+    }],
   ],
   'scons_settings': {
     'sconsbuild_dir': '<(DEPTH)/sconsbuild',