Ensure that mask layer is of the same size as the owning layer.

chrome/browser/ui/views/permission_bubble/permission_prompt_impl.cc

 // 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/views/permission_bubble/permission_prompt_impl.h"
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 37 matching lines @@
 // View implementation for the permissions bubble.
 class PermissionsBubbleDialogDelegateView
     : public views::BubbleDialogDelegateView {
  public:
   PermissionsBubbleDialogDelegateView(
       PermissionPromptImpl* owner,
       const std::vector<PermissionRequest*>& requests);
   ~PermissionsBubbleDialogDelegateView() override;
 
   void CloseBubble();
-  void SizeToContents();
+  void SizeToContents() override;

[stevenjb, 2017/06/14 17:58:58]

Assuming this overrides a BubbleDialogDelegateView method, it should be listed
below with other BubbleDialogDelegateView overrides.

[sunxd, 2017/06/14 18:19:56]

Done.

 
   // BubbleDialogDelegateView:
   bool ShouldShowCloseButton() const override;
   const gfx::FontList& GetTitleFontList() const override;
   base::string16 GetWindowTitle() const override;
   void OnWidgetDestroying(views::Widget* widget) override;
   void GetAccessibleNodeData(ui::AXNodeData* node_data) override;
   bool Cancel() override;
   bool Accept() override;
   bool Close() override;
@@ skipping 265 matching lines @@
 
 void PermissionPromptImpl::Accept() {
   if (delegate_)
     delegate_->Accept();
 }
 
 void PermissionPromptImpl::Deny() {
   if (delegate_)
     delegate_->Deny();
 }