Add a WorkerScheduler and a WebThreadImplForWorker

content/child/webthread_impl.cc

Index: content/child/webthread_impl.cc
diff --git a/content/child/webthread_impl.cc b/content/child/webthread_impl.cc
index 572e5890bb53409078ac70da898081855c491450..7938e8c21884b3f2b39f14a0abd81b1beff69c72 100644
--- a/content/child/webthread_impl.cc
+++ b/content/child/webthread_impl.cc
@@ -11,6 +11,7 @@
 #include "base/bind_helpers.h"
 #include "base/pending_task.h"
 #include "base/threading/platform_thread.h"
+#include "content/child/scheduler/single_thread_idle_task_runner.h"
 #include "third_party/WebKit/public/platform/WebTraceLocation.h"
 
 namespace content {
@@ -100,6 +101,13 @@ void WebThreadBase::RunWebThreadTask(scoped_ptr<blink::WebThread::Task> task) {
   task->run();
 }
 
+// static
+void WebThreadBase::RunWebThreadIdleTask(
+    scoped_ptr<blink::WebThread::IdleTask> idle_task,
+    base::TimeTicks deadline) {
+  idle_task->run((deadline - base::TimeTicks()).InSecondsF());
+}
+
 void WebThreadBase::postTask(const blink::WebTraceLocation& location,
                              Task* task) {
   postDelayedTask(location, task, 0);
@@ -116,6 +124,25 @@ void WebThreadBase::postDelayedTask(const blink::WebTraceLocation& web_location,
       base::TimeDelta::FromMilliseconds(delay_ms));
 }
 
+void WebThreadBase::postIdleTask(const blink::WebTraceLocation& web_location,
+                                 IdleTask* idle_task) {
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
+  IdleTaskRunner()->PostIdleTask(
+      location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
+                           base::Passed(make_scoped_ptr(idle_task))));
+}
+
+void WebThreadBase::postIdleTaskAfterWakeup(
+    const blink::WebTraceLocation& web_location,
+    IdleTask* idle_task) {
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
+  IdleTaskRunner()->PostIdleTaskAfterWakeup(
+      location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
+                           base::Passed(make_scoped_ptr(idle_task))));
+}
+
 void WebThreadBase::enterRunLoop() {
   CHECK(isCurrentThread());
   CHECK(MessageLoop());
@@ -134,25 +161,4 @@ bool WebThreadBase::isCurrentThread() const {
   return TaskRunner()->BelongsToCurrentThread();
 }
 
-blink::PlatformThreadId WebThreadImpl::threadId() const {
-  return thread_->thread_id();
-}
-
-WebThreadImpl::WebThreadImpl(const char* name)
-    : thread_(new base::Thread(name)) {
-  thread_->Start();
-}
-
-WebThreadImpl::~WebThreadImpl() {
-  thread_->Stop();
-}
-
-base::MessageLoop* WebThreadImpl::MessageLoop() const {
-  return nullptr;
-}
-
-base::SingleThreadTaskRunner* WebThreadImpl::TaskRunner() const {
-  return thread_->message_loop_proxy().get();
-}
-
 }  // namespace content