WebView: Cleanup class/struct forward declarations

android_webview/native/aw_autofill_client.h

 // 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.
 
 #ifndef ANDROID_WEBVIEW_NATIVE_AW_AUTOFILL_CLIENT_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_AUTOFILL_CLIENT_H_
 
 #include <jni.h>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "components/autofill/core/browser/autofill_client.h"
 #include "components/prefs/pref_registry_simple.h"
 #include "components/prefs/pref_service_factory.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "ui/android/view_android.h"
 
 namespace autofill {
-class AutofillMetrics;
 class AutofillPopupDelegate;
 class CardUnmaskDelegate;
 class CreditCard;
 class FormStructure;
-class PasswordGenerator;
 class PersonalDataManager;
-struct FormData;
 }
 
 namespace content {
 class WebContents;
 }
 
 namespace gfx {
 class RectF;
 }
 
@@ skipping 94 matching lines @@
   base::WeakPtr<autofill::AutofillPopupDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AwAutofillClient);
 };
 
 bool RegisterAwAutofillClient(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_AUTOFILL_CLIENT_H_