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

components/gcm_driver/fake_gcm_driver.cc

 // 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.
 
 #include "components/gcm_driver/fake_gcm_driver.h"
 
-#include "base/files/file_path.h"
-
 namespace gcm {
 
-FakeGCMDriver::FakeGCMDriver() : GCMDriver(base::FilePath(), nullptr) {
-}
-
-FakeGCMDriver::FakeGCMDriver(
-    const scoped_refptr<base::SequencedTaskRunner>& blocking_task_runner)
-    : GCMDriver(base::FilePath(), blocking_task_runner) {
+FakeGCMDriver::FakeGCMDriver() {
 }
 
 FakeGCMDriver::~FakeGCMDriver() {
 }
 
 void FakeGCMDriver::Shutdown() {
 }
 
 void FakeGCMDriver::AddAppHandler(
     const std::string& app_id, GCMAppHandler* handler) {
@@ skipping 83 matching lines @@
 }
 
 void FakeGCMDriver::AddHeartbeatInterval(const std::string& scope,
                                          int interval_ms) {
 }
 
 void FakeGCMDriver::RemoveHeartbeatInterval(const std::string& scope) {
 }
 
 }  // namespace gcm