Moving oauth code from host to base to allow code sharing between host and client.

remoting/base/fake_oauth_token_getter.h

 // Copyright 2015 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.
 
-#ifndef REMOTING_HOST_FAKE_OAUTH_TOKEN_GETTER_H_
-#define REMOTING_HOST_FAKE_OAUTH_TOKEN_GETTER_H_
+#ifndef REMOTING_BASE_FAKE_OAUTH_TOKEN_GETTER_H_
+#define REMOTING_BASE_FAKE_OAUTH_TOKEN_GETTER_H_
 
 #include <string>
 
 #include "base/callback.h"
-#include "remoting/host/oauth_token_getter.h"
+#include "remoting/base/oauth_token_getter.h"
 
 namespace remoting {
 
 class FakeOAuthTokenGetter : public OAuthTokenGetter {
  public:
   FakeOAuthTokenGetter(Status status,
                        const std::string& user_email,
                        const std::string& access_token);
   ~FakeOAuthTokenGetter() override;
 
   // OAuthTokenGetter interface.
   void CallWithToken(const TokenCallback& on_access_token) override;
   void InvalidateCache() override;
 
  private:
   Status status_;
   std::string user_email_;
   std::string access_token_;
 };
 
 }  // namespace remoting
 
-#endif  // REMOTING_HOST_FAKE_OAUTH_TOKEN_GETTER_H_
+#endif  // REMOTING_BASE_FAKE_OAUTH_TOKEN_GETTER_H_