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

chrome/browser/extensions/api/proxy/proxy_api_constants.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.
 
 // Constants for the Chrome Extensions Proxy Settings API.
 
 #include "chrome/browser/extensions/api/proxy/proxy_api_constants.h"
 
 #include "base/basictypes.h"
 
@@ skipping 12 matching lines @@
 const char kProxyConfigBypassList[] = "bypassList";
 
 const char kProxyEventFatal[] = "fatal";
 const char kProxyEventError[] = "error";
 const char kProxyEventDetails[] = "details";
 const char kProxyEventOnProxyError[] = "proxy.onProxyError";
 
 const char kPACDataUrlPrefix[] =
     "data:application/x-ns-proxy-autoconfig;base64,";
 
-const char* field_name[] = { "singleProxy",
-                             "proxyForHttp",
-                             "proxyForHttps",
-                             "proxyForFtp",
-                             "fallbackProxy" };
+const char* const field_name[] = { "singleProxy",
+                                   "proxyForHttp",
+                                   "proxyForHttps",
+                                   "proxyForFtp",
+                                   "fallbackProxy" };
 
-const char* scheme_name[] = { "*error*",
-                              "http",
-                              "https",
-                              "ftp",
-                              "socks" };
+const char* const scheme_name[] = { "*error*",
+                                    "http",
+                                    "https",
+                                    "ftp",
+                                    "socks" };
 
 COMPILE_ASSERT(SCHEME_MAX == SCHEME_FALLBACK,
                SCHEME_MAX_must_equal_SCHEME_FALLBACK);
 COMPILE_ASSERT(arraysize(field_name) == SCHEME_MAX + 1,
                field_name_array_is_wrong_size);
 COMPILE_ASSERT(arraysize(scheme_name) == SCHEME_MAX + 1,
                scheme_name_array_is_wrong_size);
 COMPILE_ASSERT(SCHEME_ALL == 0, singleProxy_must_be_first_option);
 
 }  // namespace proxy_api_constants
-}  // extensions
+}  // namespace extensions