Plumb Push API permission request through Blink using Frame.

Source/web/PushPermissionClientImpl.cpp

Index: Source/web/PushPermissionClientImpl.cpp
diff --git a/Source/web/PushPermissionClientImpl.cpp b/Source/web/PushPermissionClientImpl.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..731bf49d72f12aa98050b8bdd2b8bf707e79375f
--- /dev/null
+++ b/Source/web/PushPermissionClientImpl.cpp
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+// 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