Fold AppModalDialog into its only subclass, JavaScriptAppModalDialog.

chrome/browser/ui/android/javascript_app_modal_dialog_android.cc

 // 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.
 
 #include "chrome/browser/ui/android/javascript_app_modal_dialog_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 134 matching lines @@
 
 const ScopedJavaGlobalRef<jobject>&
     JavascriptAppModalDialogAndroid::GetDialogObject() const {
   return dialog_jobject_;
 }
 
 // static
 ScopedJavaLocalRef<jobject> GetCurrentModalDialog(
     JNIEnv* env,
     const JavaParamRef<jclass>& clazz) {
-  app_modal::AppModalDialog* dialog =
+  app_modal::JavaScriptAppModalDialog* dialog =
       app_modal::AppModalDialogQueue::GetInstance()->active_dialog();
   if (!dialog || !dialog->native_dialog())
     return ScopedJavaLocalRef<jobject>();
 
   JavascriptAppModalDialogAndroid* js_dialog =
       static_cast<JavascriptAppModalDialogAndroid*>(dialog->native_dialog());
   return ScopedJavaLocalRef<jobject>(js_dialog->GetDialogObject());
 }
 
 // static
@@ skipping 33 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ChromeJavaScriptNativeDialogAndroidFactory);
 };
 
 }  // namespace
 
 void InstallChromeJavaScriptNativeDialogFactory() {
   app_modal::JavaScriptDialogManager::GetInstance()->SetNativeDialogFactory(
       base::WrapUnique(new ChromeJavaScriptNativeDialogAndroidFactory));
 }