[OSX, OmniTheatre] Handle OriginChip click properly.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.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.
 
 #include "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 
 #include "base/mac/foundation_util.h"
 #include "base/metrics/histogram.h"
@@ skipping 757 matching lines @@
     }
   }
 
   return false;
 }
 
 void OmniboxViewMac::OnSetFocus(bool control_down) {
   model()->OnSetFocus(control_down);
   controller()->OnSetFocus();
 
-  // TODO(groby): Not entirely correct, since the chip should only be disabled
-  // after mouseDown: was handled, to allow clicking on the origin chip.
   if (chrome::ShouldDisplayOriginChipV2()) {
     controller()->GetToolbarModel()->set_origin_chip_enabled(false);
     controller()->OnChanged();
   }
 }
 
 void OmniboxViewMac::OnKillFocus() {
   // Tell the model to reset itself.
   model()->OnWillKillFocus(NULL);
   model()->OnKillFocus();
@@ skipping 189 matching lines @@
 
 NSUInteger OmniboxViewMac::GetTextLength() const {
   return [field_ currentEditor] ?  [[[field_ currentEditor] string] length] :
                                    [[field_ stringValue] length];
 }
 
 bool OmniboxViewMac::IsCaretAtEnd() const {
   const NSRange selection = GetSelectedRange();
   return NSMaxRange(selection) == GetTextLength();
 }