chrome: Cleanup class/struct forward declarations

chrome/browser/ui/android/autofill/autofill_popup_view_android.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_
 #define CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_
 
 #include <jni.h>
 #include <stddef.h>
 
 #include "base/android/scoped_java_ref.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/ui/autofill/autofill_popup_view.h"
 #include "ui/android/view_android.h"
 
-namespace gfx {
-class Rect;
-}
-
 namespace autofill {
 
 class AutofillPopupController;
 
 class AutofillPopupViewAndroid : public AutofillPopupView {
  public:
   explicit AutofillPopupViewAndroid(AutofillPopupController* controller);
 
   // --------------------------------------------------------------------------
   // Methods called from Java via JNI
@@ skipping 36 matching lines @@
 
   // Popup view
   ui::ViewAndroid::ScopedAnchorView popup_view_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillPopupViewAndroid);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_ANDROID_AUTOFILL_AUTOFILL_POPUP_VIEW_ANDROID_H_