Add support for omnibox.onInputStarted and onInputCancelled.

chrome/browser/extensions/extension_message_service.cc

Index: chrome/browser/extensions/extension_message_service.cc
diff --git a/chrome/browser/extensions/extension_message_service.cc b/chrome/browser/extensions/extension_message_service.cc
index 2c7f693eb2f4d2e64b05582d7c12ace681624ea2..979437a7ce536a6f82c16a50462d4302dba2d12d 100644
--- a/chrome/browser/extensions/extension_message_service.cc
+++ b/chrome/browser/extensions/extension_message_service.cc
@@ -114,6 +114,14 @@ const char ExtensionMessageService::kDispatchOnMessage[] =
 const char ExtensionMessageService::kDispatchEvent[] =
     "Event.dispatchJSON";
 
+// static
+std::string ExtensionMessageService::GetPerExtensionEventName(
+    const std::string& event_name, const std::string& extension_id) {
+  // This should match the method we use in extension_process_binding.js when
+  // setting up the corresponding chrome.Event object.
+  return event_name + "/" + extension_id;
+}
+
 ExtensionMessageService::ExtensionMessageService(Profile* profile)
     : profile_(profile),
       extension_devtools_manager_(NULL),
@@ -485,6 +493,14 @@ void ExtensionMessageService::DispatchEventToRenderers(
   }
 }
 
+void ExtensionMessageService::DispatchEventToExtension(
+    const std::string& extension_id,
+    const std::string& event_name, const std::string& event_args,
+    bool has_incognito_data, const GURL& event_url) {
+  DispatchEventToRenderers(GetPerExtensionEventName(event_name, extension_id),
+                           event_args, has_incognito_data, event_url);
+}
+
 void ExtensionMessageService::Observe(NotificationType type,
                                       const NotificationSource& source,
                                       const NotificationDetails& details) {