[GCM] Make sure GCM checkout logic is invoked when the profile is signed out

chrome/browser/extensions/api/gcm/gcm_apitest.cc

Index: chrome/browser/extensions/api/gcm/gcm_apitest.cc
diff --git a/chrome/browser/extensions/api/gcm/gcm_apitest.cc b/chrome/browser/extensions/api/gcm/gcm_apitest.cc
index 41372a1b3ca57e3cc3d9598f48117b00ea2dbfe0..4ce1deb6d7557481bd123a54e599b261d7544682 100644
--- a/chrome/browser/extensions/api/gcm/gcm_apitest.cc
+++ b/chrome/browser/extensions/api/gcm/gcm_apitest.cc
@@ -9,6 +9,7 @@
 #include "chrome/browser/services/gcm/fake_gcm_profile_service.h"
 #include "chrome/browser/services/gcm/gcm_client_factory.h"
 #include "chrome/browser/services/gcm/gcm_profile_service_factory.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/features/feature_channel.h"
 #include "chrome/test/base/ui_test_utils.h"
 
@@ -25,6 +26,7 @@ class GcmApiTest : public ExtensionApiTest {
   GcmApiTest() : fake_gcm_profile_service_(NULL) {}
 
  protected:
+  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;
   virtual void SetUpOnMainThread() OVERRIDE;
 
   void StartCollecting();
@@ -38,6 +40,18 @@ class GcmApiTest : public ExtensionApiTest {
   gcm::FakeGCMProfileService* fake_gcm_profile_service_;
 };
 
+void GcmApiTest::SetUpCommandLine(CommandLine* command_line) {
+  // The GCMProfileService instance could now be created in
+  // ProfileSyncServiceFactory::BuildServiceInstanceFor that is invoked when
+  // a profile is being initialized. This prevents us from settings a faked
+  // GCMProfileService instance as in SetUpOnMainThread. To work around this
+  // problem, we disable the ProfileSyncServiceFactory logic since GCM API
+  // tests do not depend on any sync feature.
+  command_line->AppendSwitch(switches::kDisableSync);
+
+  ExtensionApiTest::SetUpCommandLine(command_line);
+}
+
 void GcmApiTest::SetUpOnMainThread() {
   gcm::GCMProfileServiceFactory::GetInstance()->SetTestingFactory(
       browser()->profile(), &gcm::FakeGCMProfileService::Build);
@@ -45,6 +59,8 @@ void GcmApiTest::SetUpOnMainThread() {
       gcm::GCMProfileServiceFactory::GetInstance()->GetForProfile(
           browser()->profile()));
   gcm::FakeGCMProfileService::EnableGCMForTesting();
+
+  ExtensionApiTest::SetUpOnMainThread();
 }
 
 void GcmApiTest::StartCollecting() {