Allow content script insertion on about:-URLs.

chrome/browser/extensions/api/tabs/tabs_api.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/extensions/api/tabs/tabs_api.h"
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 1354 matching lines @@
             &error_)) {
       return false;
     }
 
     TabHelper::FromWebContents(web_contents_)->
         script_executor()->ExecuteScript(
             extension_id(),
             ScriptExecutor::JAVASCRIPT,
             url.GetContent(),
             ScriptExecutor::TOP_FRAME,
+            ScriptExecutor::MATCH_ABOUT_BLANK,

[not at google - send to devlin, 2014/04/21 22:34:41]

for backwards compatibility this should be DONT_...

[robwu, 2014/04/21 23:21:46]

Done.

             UserScript::DOCUMENT_IDLE,
             ScriptExecutor::MAIN_WORLD,
             ScriptExecutor::DEFAULT_PROCESS,
             GURL(),
             user_gesture_,
             ScriptExecutor::NO_RESULT,
             base::Bind(&TabsUpdateFunction::OnExecuteCodeFinished, this));
 
     *is_async = true;
     return true;
@@ skipping 526 matching lines @@
   execute_tab_id_ = tab_id;
   details_ = details.Pass();
   return true;
 }
 
 bool TabsInsertCSSFunction::ShouldInsertCSS() const {
   return true;
 }
 
 }  // namespace extensions