Hide fullscreen rotation jank

chrome/browser/android/tab_android.cc

 // Copyright 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/android/tab_android.h"
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 783 matching lines @@
   if (tab_content_manager == tab_content_manager_)
     return;
 
   if (tab_content_manager_)
     tab_content_manager_->DetachLiveLayer(GetAndroidId(), GetContentLayer());
   tab_content_manager_ = tab_content_manager;
   if (tab_content_manager_)
     tab_content_manager_->AttachLiveLayer(GetAndroidId(), GetContentLayer());
 }
 
+void TabAndroid::ClearThumbnailPlaceholder(JNIEnv* env,
+                                           const JavaParamRef<jobject>& obj) {
+  if (tab_content_manager_)
+    tab_content_manager_->NativeRemoveTabThumbnail(GetAndroidId());
+}
+
 scoped_refptr<content::DevToolsAgentHost> TabAndroid::GetDevToolsAgentHost() {
   return devtools_host_;
 }
 
 void TabAndroid::SetDevToolsAgentHost(
     scoped_refptr<content::DevToolsAgentHost> host) {
   devtools_host_ = std::move(host);
 }
 
 static void Init(JNIEnv* env, const JavaParamRef<jobject>& obj) {
   TRACE_EVENT0("native", "TabAndroid::Init");
   // This will automatically bind to the Java object and pass ownership there.
   new TabAndroid(env, obj);
 }
 
 // static
 bool TabAndroid::RegisterTabAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }