Revert of Removing the mock-keychain related bool from GCMStore constructor

google_apis/gcm/gcm_client_impl.h

Index: google_apis/gcm/gcm_client_impl.h
diff --git a/google_apis/gcm/gcm_client_impl.h b/google_apis/gcm/gcm_client_impl.h
index 51ca7be6390f1fd09f152552bdbf91e589dff5c4..0349270d119738edd14e63989cb478f3b67101f0 100644
--- a/google_apis/gcm/gcm_client_impl.h
+++ b/google_apis/gcm/gcm_client_impl.h
@@ -27,7 +27,6 @@
 
 namespace base {
 class Clock;
-class FilePath;
 }  // namespace base
 
 namespace net {
@@ -48,9 +47,6 @@
   virtual ~GCMInternalsBuilder();
 
   virtual scoped_ptr<base::Clock> BuildClock();
-  virtual scoped_ptr<GCMStore> BuildGCMStore(
-      const base::FilePath& path,
-      const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner);
   virtual scoped_ptr<MCSClient> BuildMCSClient(
       const std::string& version,
       base::Clock* clock,