Pass result of blockage across content API when new tab blocked.

chrome/browser/ui/browser.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 "chrome/browser/ui/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // OS_WIN
@@ skipping 1283 matching lines @@
 
   // We can synchronously update commands since they will only change once per
   // navigation, so we don't have to worry about flickering. We do, however,
   // need to update the command state early on load to always present usable
   // actions in the face of slow-to-commit pages.
   if (changed_flags & (content::INVALIDATE_TYPE_URL |
                        content::INVALIDATE_TYPE_LOAD))
     command_controller_->TabStateChanged();
 }
 
-void Browser::AddNewContents(WebContents* source,
+bool Browser::AddNewContents(WebContents* source,
                              WebContents* new_contents,
                              WindowOpenDisposition disposition,
                              const gfx::Rect& initial_pos,
                              bool user_gesture) {
-  chrome::AddWebContents(this, source, new_contents, disposition, initial_pos,
-                         user_gesture);
+  return chrome::AddWebContents(
+      this, source, new_contents, disposition, initial_pos, user_gesture);
 }
 
 void Browser::ActivateContents(WebContents* contents) {
   chrome::ActivateTabAt(this, tab_strip_model_->GetIndexOfWebContents(contents),
                         false);
   window_->Activate();
 }
 
 void Browser::DeactivateContents(WebContents* contents) {
   window_->Deactivate();
@@ skipping 180 matching lines @@
     const GURL& target_url) {
   if (window_container_type == WINDOW_CONTAINER_TYPE_BACKGROUND) {
     // If a BackgroundContents is created, suppress the normal WebContents.
     return !MaybeCreateBackgroundContents(
         route_id, web_contents, frame_name, target_url);
   }
 
   return true;
 }
 
-void Browser::WebContentsCreated(WebContents* source_contents,
+bool Browser::WebContentsCreated(WebContents* source_contents,
                                  int64 source_frame_id,
                                  const GURL& target_url,
                                  WebContents* new_contents) {
   // Adopt the WebContents now, so all observers are in place, as the network
   // requests for its initial navigation will start immediately. The WebContents
   // will later be inserted into this browser using Browser::Navigate via
   // AddNewContents.
   AdoptAsTabContents(new_contents);
 
   // Notify.
   RetargetingDetails details;
   details.source_web_contents = source_contents;
   details.source_frame_id = source_frame_id;
   details.target_url = target_url;
   details.target_web_contents = new_contents;
   details.not_yet_in_tabstrip = true;
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_RETARGETING,
       content::Source<Profile>(profile_),
       content::Details<RetargetingDetails>(&details));
+
+  return true;
 }
 
 void Browser::ContentRestrictionsChanged(WebContents* source) {
   command_controller_->ContentRestrictionsChanged();
 }
 
 void Browser::RendererUnresponsive(WebContents* source) {
   // Ignore hangs if print preview is open.
   TabContents* tab_contents = TabContents::FromWebContents(source);
   if (tab_contents) {
@@ skipping 753 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         content::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }