android: Remove in-process sync compositor code path

android_webview/common/aw_content_client.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 "android_webview/common/aw_content_client.h"
 
 #include "android_webview/common/aw_version_info_values.h"
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/user_agent.h"
@@ skipping 55 matching lines @@
   return message->type() == IPC_REPLY_ID;
 }
 
 void AwContentClient::SetGpuInfo(const gpu::GPUInfo& gpu_info) {
   gpu_fingerprint_ = gpu_info.gl_version + '|' + gpu_info.gl_vendor + '|' +
                      gpu_info.gl_renderer;
   std::replace_if(gpu_fingerprint_.begin(), gpu_fingerprint_.end(),
                   [](char c) { return !::isprint(c); }, '_');
 }
 
+bool AwContentClient::UsingSynchronousCompositing() {
+  return true;
+}
+
 }  // namespace android_webview