Revert "Merge 281715 "[Android WebView] Terminate execution of stuck JS ...""

android_webview/renderer/aw_execution_termination_filter.cc

-// Copyright 2014 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/renderer/aw_execution_termination_filter.h"
-
-#include <v8.h>
-
-#include "android_webview/common/render_view_messages.h"
-#include "base/message_loop/message_loop_proxy.h"
-
-namespace {
-const int kTerminationTimeoutInSeconds = 3;
-}  // namespace
-
-namespace android_webview {
-
-AwExecutionTerminationFilter::AwExecutionTerminationFilter(
-    const scoped_refptr<base::MessageLoopProxy>& io_message_loop,
-    const scoped_refptr<base::MessageLoopProxy>& main_message_loop)
-    : io_message_loop_(io_message_loop),
-      main_message_loop_(main_message_loop),
-      render_thread_isolate_(NULL) {
-}
-
-AwExecutionTerminationFilter::~AwExecutionTerminationFilter() {
-}
-
-void AwExecutionTerminationFilter::SetRenderThreadIsolate(
-    v8::Isolate* isolate) {
-  render_thread_isolate_ = isolate;
-}
-
-bool AwExecutionTerminationFilter::OnMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(AwExecutionTerminationFilter, message)
-    IPC_MESSAGE_HANDLER(AwViewMsg_CheckRenderThreadResponsiveness,
-                        OnCheckRenderThreadResponsiveness)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void AwExecutionTerminationFilter::OnCheckRenderThreadResponsiveness() {
-  termination_timer_.Start(
-      FROM_HERE,
-      base::TimeDelta::FromSeconds(kTerminationTimeoutInSeconds),
-      base::Bind(&AwExecutionTerminationFilter::TerminateExecution, this));
-  // Post a request to stop the timer via render thread's message loop
-  // to ensure that render thread is responsive.
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&AwExecutionTerminationFilter::StopTimerOnMainThread,
-                 this));
-}
-
-void AwExecutionTerminationFilter::StopTimerOnMainThread() {
-  io_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&AwExecutionTerminationFilter::StopTimer, this));
-}
-
-void AwExecutionTerminationFilter::StopTimer() {
-  termination_timer_.Stop();
-}
-
-void AwExecutionTerminationFilter::TerminateExecution() {
-  if (render_thread_isolate_) {
-    LOG(WARNING) << "Trying to terminate JavaScript execution because "
-        "renderer is unresponsive";
-    v8::V8::TerminateExecution(render_thread_isolate_);
-  }
-}
-
-}  // namespace android_webview