Add support for omnibox.onInputStarted and onInputCancelled.

chrome/browser/extensions/extension_message_service.h

 // Copyright (c) 2010 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 44 matching lines @@
   static const char kDispatchOnDisconnect[];
   static const char kDispatchOnMessage[];
   static const char kDispatchEvent[];
   static const char kDispatchError[];
 
   // A messaging channel.  Note that the opening port can be the same as the
   // receiver, if an extension toolstrip wants to talk to its tab (for example).
   struct MessageChannel;
   struct MessagePort;
 
+  // Returns the event name for an event that is extension-specific.
+  static std::string GetPerExtensionEventName(const std::string& event_name,
+                                              const std::string& extension_id);
+
   // --- UI thread only:
 
   explicit ExtensionMessageService(Profile* profile);
 
   // Notification that our owning profile is going away.
   void ProfileDestroyed();
 
   // Add or remove |render_process_pid| as a listener for |event_name|.
   void AddEventListener(const std::string& event_name, int render_process_id);
   void RemoveEventListener(const std::string& event_name,
@@ skipping 10 matching lines @@
   void PostMessageFromRenderer(int port_id, const std::string& message);
 
   // Send an event to every registered extension renderer.  If
   // |has_incognito_data| is true, the event is only sent to extension with the
   // permission to access incognito data. If |event_url| is not empty, the
   // event is only sent to extension with host permissions for this url.
   virtual void DispatchEventToRenderers(
       const std::string& event_name, const std::string& event_args,
       bool has_incognito_data, const GURL& event_url);
 
+  // Same as above, except use the extension-specific naming scheme for the
+  // event. This is used by events that are per-extension.
+  void DispatchEventToExtension(
+      const std::string& extension_id,
+      const std::string& event_name, const std::string& event_args,
+      bool has_incognito_data, const GURL& event_url);
+
   // Given an extension ID, opens a channel between the given
   // automation "port" or DevTools service and that extension. the
   // channel will be open to the extension process hosting the
   // background page and tool strip.
   //
   // Returns a port ID to be used for posting messages between the
   // processes, or -1 if the extension doesn't exist.
   int OpenSpecialChannelToExtension(
       const std::string& extension_id, const std::string& channel_name,
       const std::string& tab_json, IPC::Message::Sender* source);
@@ skipping 99 matching lines @@
   int next_port_id_;
 
   // Protects the next_port_id_ variable, since it can be
   // used on the IO thread or the UI thread.
   Lock next_port_id_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageService);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_SERVICE_H_