Clean up ReaderMode OverlayPanel classes

chrome/browser/android/dom_distiller/distiller_ui_handle_android.cc

 // 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.
 
 #include "chrome/browser/android/dom_distiller/distiller_ui_handle_android.h"
 
 #include "base/android/jni_string.h"
 #include "chrome/browser/ui/android/view_android_helper.h"
 #include "components/dom_distiller/core/url_utils.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/DomDistillerUIUtils_jni.h"
 #include "ui/android/window_android.h"
 #include "url/gurl.h"
 
 using base::android::ScopedJavaLocalRef;
 
 namespace dom_distiller {
 
 namespace android {
 
 // static
 void DistillerUIHandleAndroid::OpenSettings(
     content::WebContents* web_contents) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_DomDistillerUIUtils_openSettings(env,
                                         web_contents->GetJavaWebContents());
 }
 
-// static
-void DistillerUIHandleAndroid::ClosePanel(bool animate) {
-  JNIEnv* env = base::android::AttachCurrentThread();
-  Java_DomDistillerUIUtils_closePanel(env, animate);
-}
-
 }  // namespace android
 
 }  // namespace dom_distiller