components: Cleanup class/struct fwd declarations

components/nacl/browser/nacl_browser.h

 // 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.
 
 #ifndef COMPONENTS_NACL_BROWSER_NACL_BROWSER_H_
 #define COMPONENTS_NACL_BROWSER_NACL_BROWSER_H_
 
 #include <stdint.h>
 
 #include <deque>
 #include <memory>
 
 #include "base/bind.h"
 #include "base/containers/mru_cache.h"
 #include "base/files/file.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "components/nacl/browser/nacl_browser_delegate.h"
 #include "components/nacl/browser/nacl_validation_cache.h"
 
-class URLPattern;
-class GURL;
-
 namespace base {
 class FileProxy;
 }
 
 namespace nacl {
 
 static const int kGdbDebugStubPortUnknown = -1;
 static const int kGdbDebugStubPortUnused = 0;
 
 // Open an immutable executable file that can be mmapped (or a read-only file).
@@ skipping 170 matching lines @@
 
   // Singletons get destroyed at shutdown.
   base::WeakPtrFactory<NaClBrowser> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NaClBrowser);
 };
 
 } // namespace nacl
 
 #endif  // COMPONENTS_NACL_BROWSER_NACL_BROWSER_H_