Another stab at the Chromium side of storage events. The WebKit side can be ...

chrome/renderer/render_thread.h

Index: chrome/renderer/render_thread.h
===================================================================
--- chrome/renderer/render_thread.h	(revision 27652)
+++ chrome/renderer/render_thread.h	(working copy)
@@ -14,6 +14,7 @@
 #include "build/build_config.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/common/css_colors.h"
+#include "chrome/common/dom_storage_type.h"
 #include "chrome/renderer/renderer_histogram_snapshots.h"
 #include "chrome/renderer/visitedlink_slave.h"
 
@@ -22,6 +23,7 @@
 class DevToolsAgentFilter;
 class FilePath;
 class ListValue;
+class NullableString16;
 class RenderDnsMaster;
 class RendererHistogram;
 class RendererWebKitClientImpl;
@@ -32,6 +34,10 @@
 struct RendererPreferences;
 struct WebPreferences;
 
+namespace WebKit {
+class WebStorageEventDispatcher;
+}
+
 // The RenderThreadBase is the minimal interface that a RenderView/Widget
 // expects from a render thread. The interface basically abstracts a way to send
 // and receive messages.
@@ -138,7 +144,10 @@
   void OnUpdateUserScripts(base::SharedMemoryHandle table);
   void OnSetExtensionFunctionNames(const std::vector<std::string>& names);
   void OnPageActionsUpdated(const std::string& extension_id,
-                            const std::vector<std::string>& page_actions);
+      const std::vector<std::string>& page_actions);
+  void OnDOMStorageEvent(const string16& key, const NullableString16& old_value,
+      const NullableString16& new_value, const string16& origin,
+      DOMStorageType dom_storage_type);
   void OnExtensionSetAPIPermissions(
       const std::string& extension_id,
       const std::vector<std::string>& permissions);
@@ -187,6 +196,7 @@
   scoped_refptr<DevToolsAgentFilter> devtools_agent_filter_;
   scoped_ptr<RendererHistogramSnapshots> histogram_snapshots_;
   scoped_ptr<RendererWebKitClientImpl> webkit_client_;
+  scoped_ptr<WebKit::WebStorageEventDispatcher> dom_storage_event_dispatcher_;
 
   scoped_refptr<DBMessageFilter> db_message_filter_;