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

chrome/renderer/render_thread.cc

Index: chrome/renderer/render_thread.cc
===================================================================
--- chrome/renderer/render_thread.cc	(revision 27652)
+++ chrome/renderer/render_thread.cc	(working copy)
@@ -11,8 +11,10 @@
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "base/nullable_string16.h"
 #include "base/shared_memory.h"
 #include "base/stats_table.h"
+#include "base/string_util.h"
 #include "base/thread_local.h"
 #include "chrome/common/appcache/appcache_dispatcher.h"
 #include "chrome/common/chrome_switches.h"
@@ -45,6 +47,7 @@
 #include "webkit/api/public/WebColor.h"
 #include "webkit/api/public/WebCache.h"
 #include "webkit/api/public/WebKit.h"
+#include "webkit/api/public/WebStorageEventDispatcher.h"
 #include "webkit/api/public/WebString.h"
 #include "webkit/extensions/v8/benchmarking_extension.h"
 #include "webkit/extensions/v8/gears_extension.h"
@@ -59,6 +62,7 @@
 
 using WebKit::WebCache;
 using WebKit::WebString;
+using WebKit::WebStorageEventDispatcher;
 
 namespace {
 static const unsigned int kCacheStatsDelayMS = 2000 /* milliseconds */;
@@ -240,6 +244,16 @@
   ExtensionProcessBindings::SetHostPermissions(extension_url, permissions);
 }
 
+void RenderThread::OnDOMStorageEvent(const string16& key,
+    const NullableString16& old_value, const NullableString16& new_value,
+    const string16& origin, DOMStorageType dom_storage_type) {
+  if (!dom_storage_event_dispatcher_.get()) {
+    dom_storage_event_dispatcher_.reset(WebStorageEventDispatcher::create());
+  }
+  dom_storage_event_dispatcher_->dispatchStorageEvent(key, old_value, new_value,
+      origin, dom_storage_type == DOM_STORAGE_LOCAL);
+}
+
 void RenderThread::OnExtensionSetL10nMessages(
     const std::string& extension_id,
     const std::map<std::string, std::string>& l10n_messages) {
@@ -281,6 +295,8 @@
                         OnExtensionSetAPIPermissions)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetHostPermissions,
                         OnExtensionSetHostPermissions)
+    IPC_MESSAGE_HANDLER(ViewMsg_DOMStorageEvent,
+                        OnDOMStorageEvent)
     IPC_MESSAGE_HANDLER(ViewMsg_Extension_SetL10nMessages,
                         OnExtensionSetL10nMessages)
 #if defined(IPC_MESSAGE_LOG_ENABLED)