Added check to prevent extensions from injecting scrips into other extensions

chrome/browser/extensions/api/tabs/tabs.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.h"
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 1289 matching lines @@
   // Don't let the extension crash the browser or renderers.
   if (ExtensionTabUtil::IsCrashURL(url)) {
     error_ = keys::kNoCrashBrowserError;
     return false;
   }
 
   // JavaScript URLs can do the same kinds of things as cross-origin XHR, so
   // we need to check host permissions before allowing them.
   if (url.SchemeIs(chrome::kJavaScriptScheme)) {
     if (!GetExtension()->CanExecuteScriptOnPage(
-            tab_contents_->web_contents()->GetURL(), tab_id, NULL, &error_)) {
+            tab_contents_->web_contents()->GetURL(),
+            tab_contents_->web_contents()->GetURL(),
+            tab_id,
+            NULL,
+            &error_)) {
       return false;
     }
 
     tab_contents_->extension_tab_helper()->script_executor()->ExecuteScript(
         extension_id(),
         ScriptExecutor::JAVASCRIPT,
         url.path(),
         ScriptExecutor::TOP_FRAME,
         extensions::UserScript::DOCUMENT_IDLE,
         ScriptExecutor::MAIN_WORLD,
@@ skipping 498 matching lines @@
   // called for every API call the extension made.
   GotLanguage(language);
 }
 
 void DetectTabLanguageFunction::GotLanguage(const std::string& language) {
   SetResult(Value::CreateStringValue(language.c_str()));
   SendResponse(true);
 
   Release();  // Balanced in Run()
 }