Move extension_test_message_listener to extensions.

chrome/browser/extensions/api/declarative_content/request_content_script_apitest.cc

 // Copyright 2014 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 "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
-#include "chrome/browser/extensions/extension_test_message_listener.h"
 #include "chrome/browser/extensions/test_extension_dir.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/ui_test_utils.h"
 #include "content/public/test/browser_test_utils.h"
+#include "extensions/test/extension_test_message_listener.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
 namespace {
 
 // Manifest permissions injected into |kManifest|:
 const char* kPermissions[] = {
   "*://*/*",              // ALL
@@ skipping 189 matching lines @@
   EXPECT_TRUE(RunTest(PARTICULAR, NOWHERE, false));
 
   // TODO(markdittmer): Add more tests:
   // - Inject script with multiple files
   // - Inject multiple scripts
   // - Match on CSS selector conditions
   // - Match all frames in document containing frames
 }
 
 }  // namespace extensions