Rename extension_manifest_keys namespace to extensions::manifest_keys.

chrome/common/extensions/manifest_handlers/app_launch_info.cc

 // Copyright 2013 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/common/extensions/manifest_handlers/app_launch_info.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/url_constants.h"
 #include "extensions/common/error_utils.h"
 
-namespace keys = extension_manifest_keys;
+namespace keys = extensions::manifest_keys;
 namespace values = extension_manifest_values;
 namespace errors = extension_manifest_errors;
 
 namespace extensions {
 
 namespace {
 
 bool ReadLaunchDimension(const extensions::Manifest* manifest,
                          const char* key,
                          int* target,
@@ skipping 288 matching lines @@
     keys::kLaunchLocalPath,
     keys::kLaunchWebURL,
     keys::kLaunchContainer,
     keys::kLaunchHeight,
     keys::kLaunchWidth
   };
   return std::vector<std::string>(keys, keys + arraysize(keys));
 }
 
 }  // namespace extensions