[OSX] Handle PermissionBubble coalescing

chrome/browser/ui/cocoa/website_settings/permission_bubble_cocoa.mm

 // Copyright 2014 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/website_settings/permission_bubble_cocoa.h"
 
 #import "chrome/browser/ui/cocoa/base_bubble_controller.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
 #import "chrome/browser/ui/cocoa/website_settings/permission_bubble_controller.h"
 #import "chrome/browser/ui/website_settings/permission_bubble_view.h"
 #include "content/public/browser/web_contents.h"
+#import "ui/base/cocoa/nsview_additions.h"
 
 PermissionBubbleCocoa::PermissionBubbleCocoa(NSWindow* parent_window)
     : parent_window_(parent_window), delegate_(NULL), bubbleController_(nil) {}
 
 PermissionBubbleCocoa::~PermissionBubbleCocoa() {
   if (delegate_)
     delegate_->SetView(NULL);
 }
 
 void PermissionBubbleCocoa::Show(
@@ skipping 25 matching lines @@
 
 void PermissionBubbleCocoa::SetDelegate(Delegate* delegate) {
   if (delegate_ == delegate)
     return;
   if (delegate_ && delegate)
     delegate_->SetView(NULL);
   delegate_ = delegate;
 }
 
 bool PermissionBubbleCocoa::CanAcceptRequestUpdate() {
-  // TODO(gbillock): implement. Should return true if the mouse is not over the
-  // dialog.
-  return false;
+  return ![[[bubbleController_ window] contentView] cr_isMouseInView];
 }
 
 void PermissionBubbleCocoa::OnBubbleClosing() {
   bubbleController_ = nil;
 }
 
 NSPoint PermissionBubbleCocoa::GetAnchorPoint() {
   LocationBarViewMac* location_bar =
       [[parent_window_ windowController] locationBarBridge];
   NSPoint anchor = location_bar->GetPageInfoBubblePoint();
   return [parent_window_ convertBaseToScreen:anchor];
 }
 
 NSWindow* PermissionBubbleCocoa::window() {
   return [bubbleController_ window];
 }