Revert of Hook up the Push API with GCM's new ability to own encryption keys.

chrome/browser/services/gcm/gcm_profile_service.cc

Index: chrome/browser/services/gcm/gcm_profile_service.cc
diff --git a/chrome/browser/services/gcm/gcm_profile_service.cc b/chrome/browser/services/gcm/gcm_profile_service.cc
index dc2bcc7e0555f38b9fece2005db4084e71068e14..17c0784247e1a10e989a1d5d981e72b0735e42c3 100644
--- a/chrome/browser/services/gcm/gcm_profile_service.cc
+++ b/chrome/browser/services/gcm/gcm_profile_service.cc
@@ -9,15 +9,11 @@
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/chrome_constants.h"
 #include "components/gcm_driver/gcm_driver.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 
 #if defined(OS_ANDROID)
-#include "base/sequenced_task_runner.h"
-#include "base/threading/sequenced_worker_pool.h"
 #include "components/gcm_driver/gcm_driver_android.h"
-#include "content/public/browser/browser_thread.h"
 #else
 #include "base/bind.h"
 #include "base/files/file_path.h"
@@ -27,6 +23,7 @@
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
+#include "chrome/common/chrome_constants.h"
 #include "components/gcm_driver/gcm_channel_status_syncer.h"
 #include "components/gcm_driver/gcm_client_factory.h"
 #include "components/gcm_driver/gcm_driver_desktop.h"
@@ -156,16 +153,7 @@
   }
   debug_instance = this;
 
-  scoped_refptr<base::SequencedWorkerPool> worker_pool(
-      content::BrowserThread::GetBlockingPool());
-  scoped_refptr<base::SequencedTaskRunner> blocking_task_runner(
-      worker_pool->GetSequencedTaskRunnerWithShutdownBehavior(
-          worker_pool->GetSequenceToken(),
-          base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
-
-  driver_.reset(new GCMDriverAndroid(
-      profile_->GetPath().Append(chrome::kGCMStoreDirname),
-      blocking_task_runner));
+  driver_.reset(new GCMDriverAndroid);
 }
 #else
 GCMProfileService::GCMProfileService(