Credential Manager API: Enable forward declaration for CredentialType enum

components/password_manager/content/renderer/credential_manager_client_browsertest.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 "components/password_manager/content/common/credential_manager_messages.h"
 #include "components/password_manager/content/renderer/credential_manager_client.h"
 #include "content/public/test/render_view_test.h"
 #include "ipc/ipc_test_sink.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebCredential.h"
@@ skipping 191 matching lines @@
                                 request_id));
 
   scoped_ptr<TestRequestCallbacks> callbacks(new TestRequestCallbacks(this));
   std::vector<GURL> federations;
   client_->dispatchRequest(false, federations, callbacks.release());
 
   EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
                                request_id));
 
   CredentialInfo info;
-  info.type = CREDENTIAL_TYPE_LOCAL;
+  info.type = CredentialType::CREDENTIAL_TYPE_LOCAL;
   client_->OnSendCredential(request_id, info);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 TEST_F(CredentialManagerClientTest, SendRequestCredentialEmpty) {
   int request_id;
   EXPECT_FALSE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
                                 request_id));
 
   scoped_ptr<TestRequestCallbacks> callbacks(new TestRequestCallbacks(this));
   std::vector<GURL> federations;
   client_->dispatchRequest(false, federations, callbacks.release());
 
   EXPECT_TRUE(ExtractRequestId(CredentialManagerHostMsg_RequestCredential::ID,
                                request_id));
 
   CredentialInfo info; // Send an empty credential in response.
   client_->OnSendCredential(request_id, info);
   EXPECT_TRUE(callback_succeeded());
   EXPECT_FALSE(callback_errored());
 }
 
 }  // namespace password_manager