mac: Remove code that was only needed on 10.5

chrome/browser/ui/cocoa/toolbar/toolbar_controller.mm

 // Copyright (c) 2012 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 "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 
 #include <algorithm>
 
 #include "base/mac/bundle_locations.h"
 #include "base/mac/mac_util.h"
@@ skipping 287 matching lines @@
   // (http://crbug.com/18551).  We avoid the problem by incrementing
   // the retain count of the location bar; use of the scoped object
   // helps us remember to release it.
   locationBarRetainer_.reset([locationBar_ retain]);
   trackingArea_.reset(
       [[CrTrackingArea alloc] initWithRect:NSZeroRect // Ignored
                                    options:NSTrackingMouseMoved |
                                            NSTrackingInVisibleRect |
                                            NSTrackingMouseEnteredAndExited |
                                            NSTrackingActiveAlways
-                              proxiedOwner:self
+                                     owner:self
                                   userInfo:nil]);
   NSView* toolbarView = [self view];
   [toolbarView addTrackingArea:trackingArea_.get()];
 
   // If the user has any Browser Actions installed, the container view for them
   // may have to be resized depending on the width of the toolbar frame.
   [toolbarView setPostsFrameChangedNotifications:YES];
   [[NSNotificationCenter defaultCenter]
       addObserver:self
          selector:@selector(toolbarFrameChanged)
@@ skipping 477 matching lines @@
 - (void)hideDropURLsIndicatorInView:(NSView*)view {
   // Do nothing.
 }
 
 // (URLDropTargetController protocol)
 - (BOOL)isUnsupportedDropData:(id<NSDraggingInfo>)info {
   return drag_util::IsUnsupportedDropData(profile_, info);
 }
 
 @end