Remove dependency on content::BrowserThread from GCMDriver

chrome/browser/services/gcm/fake_gcm_client.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_SERVICES_GCM_FAKE_GCM_CLIENT_H_
 #define CHROME_BROWSER_SERVICES_GCM_FAKE_GCM_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "google_apis/gcm/gcm_client.h"
 
+namespace base {
+class SequencedTaskRunner;
+}
+
 namespace gcm {
 
 class FakeGCMClient : public GCMClient {
  public:
   enum Status {
     UNINITIALIZED,
     STARTED,
     STOPPED,
     CHECKED_OUT
   };
 
   enum StartMode {
     NO_DELAY_START,
     DELAY_START,
   };
 
-  explicit FakeGCMClient(StartMode start_mode);
+  FakeGCMClient(StartMode start_mode,
+                const scoped_refptr<base::SequencedTaskRunner>& ui_thread,
+                const scoped_refptr<base::SequencedTaskRunner>& io_thread);
   virtual ~FakeGCMClient();
 
   // Overridden from GCMClient:
   // Called on IO thread.
   virtual void Initialize(
       const checkin_proto::ChromeBuildProto& chrome_build_proto,
       const base::FilePath& store_path,
       const std::vector<std::string>& account_ids,
       const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner,
       const scoped_refptr<net::URLRequestContextGetter>&
@@ skipping 38 matching lines @@
   void SendFinished(const std::string& app_id, const OutgoingMessage& message);
   void MessageReceived(const std::string& app_id,
                        const IncomingMessage& message);
   void MessagesDeleted(const std::string& app_id);
   void MessageSendError(const std::string& app_id,
                         const SendErrorDetails& send_error_details);
 
   Delegate* delegate_;
   Status status_;
   StartMode start_mode_;
+  scoped_refptr<base::SequencedTaskRunner> ui_thread_;
+  scoped_refptr<base::SequencedTaskRunner> io_thread_;
   base::WeakPtrFactory<FakeGCMClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeGCMClient);
 };
 
 }  // namespace gcm
 
 #endif  // CHROME_BROWSER_SERVICES_GCM_FAKE_GCM_CLIENT_H_