Fix issue 23221: accesskey is not supported on Chromium Mac....

chrome/browser/tab_contents/tab_contents_view_mac.mm

 // Copyright (c) 2006-2008 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.
 
 #import <Carbon/Carbon.h>
 
 #include "chrome/browser/tab_contents/tab_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 338 matching lines @@
 
 - (void)setCurrentDragOperation:(NSDragOperation)operation {
   [dropTarget_ setCurrentOperation:operation];
 }
 
 - (TabContents*)tabContents {
   return tabContentsView_->tab_contents();
 }
 
 - (BOOL)processKeyboardEvent:(NativeWebKeyboardEvent*)wkEvent {
-  if (wkEvent->skip_in_browser)
+  if (wkEvent->skip_in_browser || wkEvent->type == WebKit::WebInputEvent::Char)
     return NO;
 
   NSEvent* event = wkEvent->os_event;
-
-  if (!event) {
-    // Char events are synthesized and do not contain a real event. We are not
-    // interested in them anyway.
-    DCHECK(wkEvent->type == WebKit::WebInputEvent::Char);
-    return NO;
-  }
+  DCHECK(event != NULL);
 
   // If this tab is no longer active, its window will be |nil|. In that case,
   // best ignore the event.
   if (![self window])
     return NO;
   ChromeEventProcessingWindow* window =
       (ChromeEventProcessingWindow*)[self window];
   DCHECK([window isKindOfClass:[ChromeEventProcessingWindow class]]);
 
   // Do not fire shortcuts on key up.
@@ skipping 154 matching lines @@
 }
 
 - (void)closeTabAfterEvent {
   tabContentsView_->CloseTab();
 }
 
 // Tons of stuff goes here, where we grab events going on in Cocoaland and send
 // them into the C++ system. TODO(avi): all that jazz
 
 @end