Move IdentityProvider usage from GCMDriverDesktop to GCMProfileService

components/gcm_driver/gcm_driver_android.cc

Index: components/gcm_driver/gcm_driver_android.cc
diff --git a/components/gcm_driver/gcm_driver_android.cc b/components/gcm_driver/gcm_driver_android.cc
index aa9efc40fefb6d24627806720b1e0516d2ec6d1c..845a6efbd037b2beadeeddaa86f99abb5b8c1499 100644
--- a/components/gcm_driver/gcm_driver_android.cc
+++ b/components/gcm_driver/gcm_driver_android.cc
@@ -92,6 +92,12 @@ bool GCMDriverAndroid::RegisterBindings(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
+void GCMDriverAndroid::OnSignedIn() {
+}
+
+void GCMDriverAndroid::Purge() {
+}
+
 void GCMDriverAndroid::Enable() {
 }
 
@@ -127,10 +133,6 @@ void GCMDriverAndroid::SetGCMRecording(const GetGCMStatisticsCallback& callback,
   NOTIMPLEMENTED();
 }
 
-std::string GCMDriverAndroid::SignedInUserName() const {
-  return std::string();
-}
-
 GCMClient::Result GCMDriverAndroid::EnsureStarted() {
   // TODO(johnme): Maybe we should check if GMS is available?
   return GCMClient::SUCCESS;