[webcrypto] Remove the mock implementation of WebCrypto.

content/renderer/renderer_webkitplatformsupport_impl.cc

 // Copyright (c) 2012 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 "content/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/memory/shared_memory.h"
@@ skipping 1021 matching lines @@
 
 // static
 void RendererWebKitPlatformSupportImpl::SetMockDeviceOrientationDataForTesting(
     const WebKit::WebDeviceOrientationData& data) {
   g_test_device_orientation_data.Get() = data;
 }
 
 //------------------------------------------------------------------------------
 
 WebKit::WebCrypto* RendererWebKitPlatformSupportImpl::crypto() {
-  // Use a mock implementation for testing in-progress work.
-  WebKit::WebCrypto* crypto =
-      GetContentClient()->renderer()->OverrideWebCrypto();
-  if (crypto)
-    return crypto;
-
   if (!web_crypto_)
     web_crypto_.reset(new WebCryptoImpl());
   return web_crypto_.get();
 
 }
 
 //------------------------------------------------------------------------------
 
 #if defined(OS_ANDROID)
 void RendererWebKitPlatformSupportImpl::vibrate(unsigned int milliseconds) {
@@ skipping 16 matching lines @@
     return;
   QuotaDispatcher::ThreadSpecificInstance(
       thread_safe_sender_.get(),
       quota_message_filter_.get())->QueryStorageUsageAndQuota(
           storage_partition,
           static_cast<quota::StorageType>(type),
           QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 }  // namespace content