Cleanup: Better constify some strings in chrome/browser/{chromeos,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/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[] = {
+const char* const kPermissions[] = {
   "*://*/*",              // ALL
   "http://127.0.0.1/*",   // PARTICULAR
   "http://nowhere.com/*"  // NOWHERE
 };
 
 // Script matchers for injected into |kBackgroundScriptSource|:
-const char* kScriptMatchers[] = {
+const char* const kScriptMatchers[] = {
   "{ pageUrl: { hostContains: '' } }",          // ALL
   "{ pageUrl: { hostEquals: '127.0.0.1' } }",   // PARTICULAR
   "{ pageUrl: { hostEquals: 'nowhere.com' } }"  // NOWHERE
 };
 
 enum PermissionOrMatcherType {
   ALL = 0,
   PARTICULAR,
   NOWHERE
 };
@@ skipping 174 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