[Mac] Allow omnibox decorations to decline mouse events.

chrome/browser/cocoa/location_bar/autocomplete_text_field_unittest.mm

 // Copyright (c) 2010 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 <Cocoa/Cocoa.h>
 
 #include "app/resource_bundle.h"
 #import "base/cocoa_protocols_mac.h"
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/cocoa/location_bar/autocomplete_text_field.h"
@@ skipping 14 matching lines @@
 
 namespace {
 
 class MockDecoration : public LocationBarDecoration {
  public:
   virtual CGFloat GetWidthForSpace(CGFloat width) { return 20.0; }
   virtual bool IsVisible() const { return visible_; }
   void SetVisible(bool visible) { visible_ = visible; }
 
   virtual void DrawInFrame(NSRect frame, NSView* control_view) { ; }
+  virtual bool AcceptsMousePress() { return true; }
   MOCK_METHOD1(OnMousePressed, bool(NSRect frame));
   MOCK_METHOD0(GetMenu, NSMenu*());
 
   bool visible_;
 };
 
 // Mock up an incrementing event number.
 NSUInteger eventNumber = 0;
 
 // Create an event of the indicated |type| at |point| within |view|.
@@ skipping 757 matching lines @@
   scoped_nsobject<AutocompleteTextField> pin([field_ retain]);
   [field_ removeFromSuperview];
   [test_window() resignKeyWindow];
 
   [[test_window() contentView] addSubview:field_];
   EXPECT_CALL(field_observer_, ClosePopup());
   [test_window() resignKeyWindow];
 }
 
 }  // namespace