Remove PushPermissionClient.

Source/web/PushPermissionClientImpl.cpp

Index: Source/web/PushPermissionClientImpl.cpp
diff --git a/Source/web/PushPermissionClientImpl.cpp b/Source/web/PushPermissionClientImpl.cpp
deleted file mode 100644
index 731bf49d72f12aa98050b8bdd2b8bf707e79375f..0000000000000000000000000000000000000000
--- a/Source/web/PushPermissionClientImpl.cpp
+++ /dev/null
@@ -1,38 +0,0 @@
-// 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 "config.h"
-#include "web/PushPermissionClientImpl.h"
-
-#include "core/dom/Document.h"
-#include "core/dom/ExecutionContext.h"
-#include "public/web/WebFrameClient.h"
-#include "web/WebLocalFrameImpl.h"
-
-namespace blink {
-
-PassOwnPtrWillBeRawPtr<PushPermissionClientImpl> PushPermissionClientImpl::create()
-{
-    return adoptPtrWillBeNoop(new PushPermissionClientImpl());
-}
-
-PushPermissionClientImpl::PushPermissionClientImpl()
-{
-}
-
-PushPermissionClientImpl::~PushPermissionClientImpl()
-{
-}
-
-void PushPermissionClientImpl::requestPermission(ExecutionContext* context, WebCallback* callback)
-{
-    ASSERT(context && context->isDocument());
-
-    Document* document = toDocument(context);
-    WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(document->frame());
-
-    webFrame->client()->requestPushPermission(callback);
-}
-
-} // namespace blink