Allow manifest handlers to declare keys they depend on that must be parsed before them.

chrome/browser/extensions/api/identity/identity_apitest.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/string_util.h"
 #include "base/stringprintf.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/identity/identity_api.h"
 #include "chrome/browser/extensions/api/identity/web_auth_flow.h"
 #include "chrome/browser/extensions/extension_apitest.h"
@@ skipping 130 matching lines @@
   bool install_ui_result_;
   bool login_ui_shown_;
   bool install_ui_shown_;
 };
 
 class GetAuthTokenFunctionTest : public ExtensionBrowserTest {
  public:
   virtual void SetUp() OVERRIDE {
     ExtensionBrowserTest::SetUp();
     ManifestHandler::Register(extension_manifest_keys::kOAuth2,
-                              new OAuth2ManifestHandler);
+                              make_linked_ptr(new OAuth2ManifestHandler));
   }
  protected:
   enum OAuth2Fields {
     NONE = 0,
     CLIENT_ID = 1,
     SCOPES = 2
   };
 
   ~GetAuthTokenFunctionTest() {}
 
@@ skipping 293 matching lines @@
 IN_PROC_BROWSER_TEST_F(LaunchWebAuthFlowFunctionTest, Bounds) {
   RunAndCheckBounds("", 0, 0, 0, 0);
   RunAndCheckBounds("\"width\": 100, \"height\": 200", 0, 0, 100, 200);
   RunAndCheckBounds("\"left\": 100, \"top\": 200", 100, 200, 0, 0);
   RunAndCheckBounds(
       "\"left\": 100, \"top\": 200, \"width\": 300, \"height\": 400",
       100, 200, 300, 400);
 }
 
 }  // namespace extensions