mac: History swiping doesn't work right with iframes.

content/browser/renderer_host/render_widget_host_view_mac_unittest.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 "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "base/mac/mac_util.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/browser_thread_impl.h"
@@ skipping 54 matching lines @@
 }
 
 @end
 
 @interface MockRenderWidgetHostViewMacDelegate
     : NSObject<RenderWidgetHostViewMacDelegate> {
   BOOL unhandledWheelEventReceived_;
 }
 
 @property(nonatomic) BOOL unhandledWheelEventReceived;
-
-- (void)gotUnhandledWheelEvent;
 @end
 
 @implementation MockRenderWidgetHostViewMacDelegate
 
 @synthesize unhandledWheelEventReceived = unhandledWheelEventReceived_;
 
-- (void)gotUnhandledWheelEvent {
-  unhandledWheelEventReceived_ = true;
+- (void)gotWheelEventConsumed:(BOOL)consumed {
+  if (!consumed)
+    unhandledWheelEventReceived_ = true;
 }
 - (void)touchesBeganWithEvent:(NSEvent*)event{}
 - (void)touchesMovedWithEvent:(NSEvent*)event{}
 - (void)touchesCancelledWithEvent:(NSEvent*)event{}
 - (void)touchesEndedWithEvent:(NSEvent*)event{}
 - (void)beginGestureWithEvent:(NSEvent*)event{}
 - (void)endGestureWithEvent:(NSEvent*)event{}
 - (BOOL)canRubberbandLeft:(NSView*)view {
   return true;
 }
@@ skipping 693 matching lines @@
   host->OnMessageReceived(*response2);
 
   // Check that the view delegate ignored the empty unhandled wheel event.
   ASSERT_EQ(NO, view_delegate.get().unhandledWheelEventReceived);
 
   // Clean up.
   host->Shutdown();
 }
 
 }  // namespace content