Add extensions_unittests to chromium_builder_tests target.

This is the first step into getting this target running on
TS/CQ/Waterfall system.

BUG=348066
TEST=green trybots
R=yoz@chromium.org,stip@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/294483003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271871 0039d316-1c4b-4281-b951-d872f2087c98

build/all.gyp

@@ -275,6 +275,7 @@
             '../content/content_shell_and_tests.gyp:content_shell',
             '../content/content_shell_and_tests.gyp:content_unittests',
             '../device/device_tests.gyp:device_unittests',
+            '../extensions/extensions.gyp:extensions_unittests',
             '../gin/gin.gyp:gin_unittests',
             '../google_apis/google_apis.gyp:google_apis_unittests',
             '../gpu/gles2_conform_support/gles2_conform_support.gyp:gles2_conform_support',

extensions/common/extensions_client.h

@@ -22,7 +22,6 @@ class FeatureProvider;
 class ManifestPermissionSet;
 class PermissionMessage;
 class PermissionMessageProvider;
-class PermissionsProvider;
 class SimpleFeature;
 class URLPatternSet;
 

extensions/test/test_extensions_client.cc

@@ -27,12 +27,6 @@ void TestExtensionsClient::Initialize() {
   }
 }
 
-const PermissionsProvider&
-TestExtensionsClient::GetPermissionsProvider() const {
-  static TestPermissionsProvider provider;
-  return provider;
-}
-
 const PermissionMessageProvider&
 TestExtensionsClient::GetPermissionMessageProvider() const {
   static TestPermissionMessageProvider provider;

extensions/test/test_extensions_client.h

@@ -17,7 +17,6 @@ class TestExtensionsClient : public ExtensionsClient {
 
  private:
   virtual void Initialize() OVERRIDE;
-  virtual const PermissionsProvider& GetPermissionsProvider() const OVERRIDE;
   virtual const PermissionMessageProvider& GetPermissionMessageProvider() const
       OVERRIDE;
   virtual scoped_ptr<FeatureProvider> CreateFeatureProvider(