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

chrome/browser/extensions/api/management/management_api_browsertest.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 "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/api/management/management_api.h"
 #include "chrome/browser/extensions/api/management/management_api_constants.h"
@@ skipping 231 matching lines @@
     EXPECT_TRUE(service->GetExtensionById(kId, false) == NULL);
     EXPECT_TRUE(service->GetExtensionById(kId, true) != NULL);
     EXPECT_TRUE(ExtensionPrefs::Get(browser()->profile())
                     ->DidExtensionEscalatePermissions(kId));
   }
 
   void SetEnabled(bool enabled, bool user_gesture,
                   const std::string& expected_error) {
     scoped_refptr<ManagementSetEnabledFunction> function(
         new ManagementSetEnabledFunction);
-    const char* enabled_string = enabled ? "true" : "false";
+    const char* const enabled_string = enabled ? "true" : "false";
     if (user_gesture)
       function->set_user_gesture(true);
     bool response = util::RunFunction(
         function.get(),
         base::StringPrintf("[\"%s\", %s]", kId, enabled_string),
         browser(),
         util::NONE);
     if (expected_error.empty()) {
       EXPECT_EQ(true, response);
     } else {
@@ skipping 53 matching lines @@
   // extension should be reloaded and enabled.
   ASSERT_TRUE(CrashEnabledExtension(kId));
   SetEnabled(false, true, std::string());
   SetEnabled(true, true, std::string());
   const Extension* extension = ExtensionSystem::Get(browser()->profile())
       ->extension_service()->GetExtensionById(kId, false);
   EXPECT_TRUE(extension);
 }
 
 }  // namespace extensions