Suppress JavaScript dialogs when a tab puts itself into fullscreen.

content/public/browser/web_contents_delegate.cc

 // 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/public/browser/web_contents_delegate.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
@@ skipping 22 matching lines @@
 bool WebContentsDelegate::IsPopupOrPanel(const WebContents* source) const {
   return false;
 }
 
 bool WebContentsDelegate::CanOverscrollContent() const { return false; }
 
 gfx::Rect WebContentsDelegate::GetRootWindowResizerRect() const {
   return gfx::Rect();
 }
 
-bool WebContentsDelegate::ShouldSuppressDialogs(WebContents* source) {
+bool WebContentsDelegate::ShouldSuppressDialogs(WebContents* source,
+                                                bool before_unload) {
   return false;
 }
 
 bool WebContentsDelegate::ShouldPreserveAbortedURLs(WebContents* source) {
   return false;
 }
 
 bool WebContentsDelegate::AddMessageToConsole(WebContents* source,
                                               int32_t level,
                                               const base::string16& message,
@@ skipping 201 matching lines @@
 void WebContentsDelegate::ShowCertificateViewerInDevTools(
     WebContents* web_contents,
     int cert_id) {
 }
 
 void WebContentsDelegate::RequestAppBannerFromDevTools(
     content::WebContents* web_contents) {
 }
 
 }  // namespace content