Split GCMDriver into platform-specific implementations

chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc

Index: chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc
diff --git a/chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc b/chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc
index e6e97cc0249f36e55883ca0e695eea5fc239cc0d..848be3ed340424ef7a1da179ead788836095fe5d 100644
--- a/chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc
+++ b/chrome/browser/invalidation/gcm_invalidation_bridge_unittest.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/signin/fake_profile_oauth2_token_service_builder.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/test/base/testing_profile.h"
+#include "components/gcm_driver/fake_gcm_driver.h"
 #include "components/gcm_driver/gcm_driver.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "google_apis/gaia/fake_identity_provider.h"
@@ -19,11 +20,12 @@ namespace {
 
 // Implementation of GCMDriver::Register that always succeeds with the same
 // registrationId.
-class FakeGCMDriver : public gcm::GCMDriver {
+class CustomFakeGCMDriver : public gcm::FakeGCMDriver {
  public:
-  FakeGCMDriver() {}
-  virtual ~FakeGCMDriver() {}
+  CustomFakeGCMDriver() {}
+  virtual ~CustomFakeGCMDriver() {}
 
+  // GCMDriver overrides:
   virtual void Register(const std::string& app_id,
                         const std::vector<std::string>& sender_ids,
                         const RegisterCallback& callback) OVERRIDE {
@@ -34,7 +36,7 @@ class FakeGCMDriver : public gcm::GCMDriver {
   }
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(FakeGCMDriver);
+  DISALLOW_COPY_AND_ASSIGN(CustomFakeGCMDriver);
 };
 
 class GCMInvalidationBridgeTest : public ::testing::Test {
@@ -53,7 +55,7 @@ class GCMInvalidationBridgeTest : public ::testing::Test {
         (FakeProfileOAuth2TokenService*)
         ProfileOAuth2TokenServiceFactory::GetForProfile(profile_.get());
     token_service->IssueRefreshTokenForUser("", "fake_refresh_token");
-    gcm_driver_.reset(new FakeGCMDriver());
+    gcm_driver_.reset(new CustomFakeGCMDriver());
 
     identity_provider_.reset(new FakeIdentityProvider(token_service));
     bridge_.reset(new GCMInvalidationBridge(gcm_driver_.get(),