Don't serialize extension user script injection results unless the extension

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 37 matching lines @@
     TOP_FRAME,
     ALL_FRAMES,
   };
 
   // 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,
+  };
+
+  // The type of result the caller is interested in.
+  enum ResultType {
+    NO_RESULT,
+    JSON_SERIALIZED_RESULT,
+  };
+
   // Callback from ExecuteScript. The arguments are (error, on_page_id, on_url,
   // result). Success is implied by an empty error.
   typedef base::Callback<void(const std::string&, int32, const GURL&,
                               const base::ListValue&)>
       ExecuteScriptCallback;
 
   // 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,
                      UserScript::RunLocation run_at,
                      WorldType world_type,
-                     bool is_web_view,
+                     ProcessType process_type,
+                     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_