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

chrome/browser/debugger/devtools_window.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 <algorithm>
 
 #include "base/command_line.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/string_number_conversions.h"
@@ skipping 559 matching lines @@
   SkColor color_tab_text =
       tp->GetColor(ThemeService::COLOR_BOOKMARK_TEXT);
   std::string command = StringPrintf(
       "InspectorFrontendAPI.setToolbarColors(\"%s\", \"%s\")",
       SkColorToRGBAString(color_toolbar).c_str(),
       SkColorToRGBAString(color_tab_text).c_str());
   tab_contents_->web_contents()->GetRenderViewHost()->
       ExecuteJavascriptInWebFrame(string16(), UTF8ToUTF16(command));
 }
 
-void DevToolsWindow::AddNewContents(WebContents* source,
+bool DevToolsWindow::AddNewContents(WebContents* source,
                                     WebContents* new_contents,
                                     WindowOpenDisposition disposition,
                                     const gfx::Rect& initial_pos,
                                     bool user_gesture) {
   if (inspected_tab_) {
-    inspected_tab_->web_contents()->GetDelegate()->AddNewContents(
+    return inspected_tab_->web_contents()->GetDelegate()->AddNewContents(
         source, new_contents, disposition, initial_pos, user_gesture);
   }
+  return true;
 }
 
 bool DevToolsWindow::PreHandleKeyboardEvent(
     content::WebContents* source,
     const NativeWebKeyboardEvent& event, bool* is_keyboard_shortcut) {
   if (docked_) {
     BrowserWindow* inspected_window = GetInspectedBrowserWindow();
     if (inspected_window)
       return inspected_window->PreHandleKeyboardEvent(
           event, is_keyboard_shortcut);
@@ skipping 166 matching lines @@
   FileSelectHelper::RunFileChooser(web_contents, params);
 }
 
 void DevToolsWindow::UpdateBrowserToolbar() {
   if (!inspected_tab_)
     return;
   BrowserWindow* inspected_window = GetInspectedBrowserWindow();
   if (inspected_window)
     inspected_window->UpdateToolbar(inspected_tab_, false);
 }