Allow content script insertion on about:-URLs.

chrome/browser/extensions/script_executor.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_SCRIPT_EXECUTOR_H_
 #define CHROME_BROWSER_EXTENSIONS_SCRIPT_EXECUTOR_H_
 
 #include <string>
 
 #include "base/callback_forward.h"
@@ skipping 31 matching lines @@
     JAVASCRIPT,
     CSS,
   };
 
   // The scope of the script injection across the frames.
   enum FrameScope {
     TOP_FRAME,
     ALL_FRAMES,
   };
 
+  // Whether to insert the script in about: frames when its origin matches
+  // the extension's host permissions.
+  enum MatchAboutBlank {
+    MATCH_ABOUT_BLANK,
+    DONT_MATCH_ABOUT_BLANK,

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

switch the order of these, false should have the 0 value.

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

Done.

+  };
+
   // The type of world to inject into (main world, or its own isolated world).
   enum WorldType {
     MAIN_WORLD,
     ISOLATED_WORLD,
   };
 
   // The type of process the target is.
   enum ProcessType {
     DEFAULT_PROCESS,
     WEB_VIEW_PROCESS,
@@ skipping 14 matching lines @@
   // Executes a script. The arguments match ExtensionMsg_ExecuteCode_Params in
   // extension_messages.h (request_id is populated automatically).
   //
   // |callback| will always be called even if the IPC'd renderer is destroyed
   // before a response is received (in this case the callback will be with a
   // failure and appropriate error message).
   void ExecuteScript(const std::string& extension_id,
                      ScriptType script_type,
                      const std::string& code,
                      FrameScope frame_scope,
+                     MatchAboutBlank match_about_blank,
                      UserScript::RunLocation run_at,
                      WorldType world_type,
                      ProcessType process_type,
                      const GURL& file_url,
                      bool user_gesture,
                      ResultType result_type,
                      const ExecuteScriptCallback& callback);
 
  private:
   // The next value to use for request_id in ExtensionMsg_ExecuteCode_Params.
   int next_request_id_;
 
   content::WebContents* web_contents_;
 
   ObserverList<TabHelper::ScriptExecutionObserver>* script_observers_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SCRIPT_EXECUTOR_H_