Pull domstorage specifics out of RenderThreadImpl into DomStorageDispatcher

content/renderer/dom_storage/dom_storage_dispatcher.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/dom_storage/dom_storage_dispatcher.h"
+
+#include "content/common/dom_storage_messages.h"
+#include "content/renderer/dom_storage/webstoragearea_impl.h"
+#include "content/renderer/dom_storage/webstoragenamespace_impl.h"
+#include "content/renderer/render_thread_impl.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageEventDispatcher.h"
+
+bool DomStorageDispatcher::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(DomStorageDispatcher, msg)
+    IPC_MESSAGE_HANDLER(DOMStorageMsg_Event, OnStorageEvent)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void DomStorageDispatcher::OnStorageEvent(
+    const DOMStorageMsg_Event_Params& params) {
+  RenderThreadImpl::current()->EnsureWebKitInitialized();
+
+  bool originated_in_process = params.connection_id != 0;
+  WebStorageAreaImpl* originating_area = NULL;
+  if (originated_in_process) {
+    originating_area = WebStorageAreaImpl::FromConnectionId(
+        params.connection_id);
+  }
+
+  if (params.namespace_id == dom_storage::kLocalStorageNamespaceId) {
+    WebKit::WebStorageEventDispatcher::dispatchLocalStorageEvent(
+        params.key,
+        params.old_value,
+        params.new_value,
+        params.origin,
+        params.page_url,
+        originating_area,
+        originated_in_process);
+  } else if (originated_in_process) {
+    // TODO(michaeln): For now, we only raise session storage events into the
+    // process which caused the event to occur. However there are cases where
+    // sessions can span process boundaries, so there are correctness issues.
+    WebStorageNamespaceImpl
+        session_namespace_for_event_dispatch(params.namespace_id);
+    WebKit::WebStorageEventDispatcher::dispatchSessionStorageEvent(
+        params.key,
+        params.old_value,
+        params.new_value,
+        params.origin,
+        params.page_url,
+        session_namespace_for_event_dispatch,
+        originating_area,
+        originated_in_process);
+  }
+}