Cleanup: Better constify some strings in chrome/browser/{chromeos,extensions}.

chrome/browser/extensions/api/tab_capture/tab_capture_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.
 
 // Implements the Chrome Extensions Tab Capture API.
 
 #include "chrome/browser/extensions/api/tab_capture/tab_capture_api.h"
 
 #include <set>
 #include <string>
@@ skipping 33 matching lines @@
     "Extension has not been invoked for the current page (see activeTab "
     "permission). Chrome pages cannot be captured.";
 
 // Keys/values for media stream constraints.
 const char kMediaStreamSource[] = "chromeMediaSource";
 const char kMediaStreamSourceId[] = "chromeMediaSourceId";
 const char kMediaStreamSourceTab[] = "tab";
 
 // Whitelisted extensions that do not check for a browser action grant because
 // they provide API's.
-const char* whitelisted_extensions[] = {
+const char* const whitelisted_extensions[] = {
   "enhhojjnijigcajfphajepfemndkmdlo",  // Dev
   "pkedcjkdefgpdelpbcmbmeomcjbeemfm",  // Trusted Tester
   "fmfcbgogabcbclcofgocippekhfcmgfj",  // Staging
   "hfaagokkkhdbgiakmmlclaapfelnkoah",  // Canary
   "F155646B5D1CA545F7E1E4E20D573DFDD44C2540",  // Trusted Tester (public)
   "16CA7A47AAE4BE49B1E75A6B960C3875E945B264"   // Release
 };
 
 }  // namespace
 
@@ skipping 97 matching lines @@
   extensions::TabCaptureRegistry* registry =
       extensions::TabCaptureRegistry::Get(GetProfile());
   base::ListValue* const list = new base::ListValue();
   if (registry)
     registry->GetCapturedTabs(extension()->id(), list);
   SetResult(list);
   return true;
 }
 
 }  // namespace extensions