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

chrome/browser/extensions/api/web_navigation/frame_navigation_state.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/web_navigation/frame_navigation_state.h"
 
 #include "base/logging.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/render_frame_host.h"
 #include "extensions/common/constants.h"
 
 namespace extensions {
 
 namespace {
 
 // URL schemes for which we'll send events.
-const char* kValidSchemes[] = {
+const char* const kValidSchemes[] = {
     content::kChromeUIScheme,
     url::kHttpScheme,
     url::kHttpsScheme,
     url::kFileScheme,
     url::kFtpScheme,
     url::kJavaScriptScheme,
     url::kDataScheme,
     url::kFileSystemScheme,
 };
 
@@ skipping 190 matching lines @@
 
 bool FrameNavigationState::GetIsServerRedirected(
     content::RenderFrameHost* frame_host) const {
   FrameHostToStateMap::const_iterator it =
       frame_host_state_map_.find(frame_host);
   DCHECK(it != frame_host_state_map_.end());
   return it != frame_host_state_map_.end() && it->second.is_server_redirected;
 }
 
 }  // namespace extensions