Forgot backspace/shift-backspace.

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.
 
 #include "chrome/browser/tab_contents/tab_contents_view_mac.h"
 
 #include <string>
 
 #include "chrome/browser/browser.h" // TODO(beng): this dependency is awful.
 #import "chrome/browser/cocoa/focus_tracker.h"
@@ skipping 281 matching lines @@
 - (TabContents*)tabContents {
   return tabContentsView_->tab_contents();
 }
 
 - (void)processKeyboardEvent:(NSEvent*)event {
   // If this tab is no longer active, it's window will be |nil|. In that case,
   // best ignore the event.
   if (![self window])
     return;
 
-  ChromeBrowserWindow* window = (ChromeBrowserWindow*)[self window];
-  DCHECK([window isKindOfClass:[ChromeBrowserWindow class]]);
-  if ([window handleExtraBrowserKeyboardShortcut:event])
-    return;
-  if ([window handleExtraWindowKeyboardShortcut:event])
-    return;
+  // Do not fire shortcuts on key up.
+  if ([event type] == NSKeyDown) {
+    ChromeBrowserWindow* window = (ChromeBrowserWindow*)[self window];
+    DCHECK([window isKindOfClass:[ChromeBrowserWindow class]]);
+    if ([window handleExtraBrowserKeyboardShortcut:event])
+      return;
+    if ([window handleExtraWindowKeyboardShortcut:event])
+      return;
+  }
 
   if ([event type] == NSKeyDown)
     [super keyDown:event];
   else if ([event type] == NSKeyUp)
     [super keyUp:event];
 }
 
 - (void)mouseEvent:(NSEvent *)theEvent {
   TabContents* tabContents = [self tabContents];
   if (tabContents->delegate()) {
@@ skipping 99 matching lines @@
 }
 
 - (BOOL)performDragOperation:(id<NSDraggingInfo>)sender {
   return [dropTarget_ performDragOperation:sender view:self];
 }
 
 // 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