Hide fullscreen rotation jank

ui/android/view_android.cc

 // Copyright 2016 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 "ui/android/view_android.h"
 
 #include <algorithm>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 225 matching lines @@
 }
 
 void ViewAndroid::SetLayer(scoped_refptr<cc::Layer> layer) {
   layer_ = layer;
 }
 
 void ViewAndroid::SetLayout(ViewAndroid::LayoutParams params) {
   layout_params_ = params;
 }
 
+void ViewAndroid::ClearThumbnailPlaceholder() {
+  ScopedJavaLocalRef<jobject> delegate(GetViewAndroidDelegate());
+  if (delegate.is_null())
+    return;
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_ViewAndroidDelegate_clearThumbnailPlaceholder(env, delegate);
+}
+
 bool ViewAndroid::StartDragAndDrop(const JavaRef<jstring>& jtext,
                                    const JavaRef<jobject>& jimage) {
   ScopedJavaLocalRef<jobject> delegate(GetViewAndroidDelegate());
   if (delegate.is_null())
     return false;
   JNIEnv* env = base::android::AttachCurrentThread();
   return Java_ViewAndroidDelegate_startDragAndDrop(env, delegate, jtext,
                                                    jimage);
 }
 
@@ skipping 124 matching lines @@
         matched = bound.Contains(int_point);
       }
       if (matched && child->HitTest(send_to_client, event, offset_point))
         return true;
     }
   }
   return false;
 }
 
 }  // namespace ui