Port Extension Commands to Mac.

chrome/browser/ui/cocoa/browser_window_controller.h

Index: chrome/browser/ui/cocoa/browser_window_controller.h
===================================================================
--- chrome/browser/ui/cocoa/browser_window_controller.h	(revision 151684)
+++ chrome/browser/ui/cocoa/browser_window_controller.h	(working copy)
@@ -34,6 +34,7 @@
 @class ChromeToMobileBubbleController;
 @class DevToolsController;
 @class DownloadShelfController;
+class ExtensionKeybindingRegistryCocoa;
 @class FindBarCocoaController;
 @class FullscreenWindow;
 @class GTMWindowSheetController;
@@ -161,6 +162,10 @@
   // -windowDidEnterFullScreen: gets called.
   GURL fullscreenUrl_;
   FullscreenExitBubbleType fullscreenBubbleType_;
+
+  // The Extension Command Registry used to determine which keyboard events to
+  // handle.
+  scoped_ptr<ExtensionKeybindingRegistryCocoa> extension_keybinding_registry_;
 }
 
 // A convenience class method which gets the |BrowserWindowController| for a
@@ -272,6 +277,10 @@
 // "chrome/app/chrome_command_ids.h" file.
 - (void)executeCommand:(int)command;
 
+// Consults the Command Registry to see if this |event| needs to be handled as
+// an extension command and returns YES if so (NO otherwise).
+- (BOOL)handledByExtensionCommand:(NSEvent*)event;
+
 // Delegate method for the status bubble to query its base frame.
 - (NSRect)statusBubbleBaseFrame;