Move WorkerTaskRunner to content/child.

This moves it from webkit/child to content/child, since src/webkit is
dying and it is a trivial move. WorkerTaskRunner has no
dependencies besides base, and nobody in webkit/ is using it, just
content.

BUG=265753
TEST=content_shell and content_unittests
R=jochen@chromium.org,jam@chromium.org,darin@chromium.org
TBR=darin

Review URL: https://codereview.chromium.org/165373004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251975 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 0 insertions, 228 deletions

diff --git a/webkit/child/webkit_child.gyp b/webkit/child/webkit_child.gyp
index bf992f7..fd161e7 100644
--- a/webkit/child/webkit_child.gyp
+++ b/webkit/child/webkit_child.gyp
@@ -85,8 +85,6 @@
         'weburlrequest_extradata_impl.h',
         'weburlresponse_extradata_impl.cc',
         'weburlresponse_extradata_impl.h',
-        'worker_task_runner.cc',
-        'worker_task_runner.h',
       ],
       # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
       'msvs_disabled_warnings': [ 4267 ],
diff --git a/webkit/child/worker_task_runner.cc b/webkit/child/worker_task_runner.cc
deleted file mode 100644
index c0d4359..0000000
--- a/webkit/child/worker_task_runner.cc
+++ /dev/null
@@ -1,111 +0,0 @@
-// 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 "base/callback.h"
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/observer_list.h"
-#include "webkit/child/worker_task_runner.h"
-
-using blink::WebWorkerRunLoop;
-
-namespace {
-
-class RunClosureTask : public WebWorkerRunLoop::Task {
- public:
-  RunClosureTask(const base::Closure& task) : task_(task) {}
-  virtual ~RunClosureTask() {}
-  virtual void Run() {
-    task_.Run();
-  }
- private:
-  base::Closure task_;
-};
-
-} // unnamed namespace
-
-namespace webkit_glue {
-
-struct WorkerTaskRunner::ThreadLocalState {
-  ThreadLocalState(int id, const WebWorkerRunLoop& loop)
-      : id_(id), run_loop_(loop) {
-  }
-  int id_;
-  WebWorkerRunLoop run_loop_;
-  ObserverList<WorkerTaskRunner::Observer> stop_observers_;
-};
-
-WorkerTaskRunner::WorkerTaskRunner() {
-  // Start worker ids at 1, 0 is reserved for the main thread.
-  int id = id_sequence_.GetNext();
-  DCHECK(!id);
-}
-
-bool WorkerTaskRunner::PostTask(
-    int id, const base::Closure& closure) {
-  DCHECK(id > 0);
-  base::AutoLock locker(loop_map_lock_);
-  IDToLoopMap::iterator found = loop_map_.find(id);
-  if (found == loop_map_.end())
-    return false;
-  return found->second.postTask(new RunClosureTask(closure));
-}
-
-int WorkerTaskRunner::PostTaskToAllThreads(const base::Closure& closure) {
-  base::AutoLock locker(loop_map_lock_);
-  IDToLoopMap::iterator it;
-  for (it = loop_map_.begin(); it != loop_map_.end(); ++it)
-    it->second.postTask(new RunClosureTask(closure));
-  return static_cast<int>(loop_map_.size());
-}
-
-int WorkerTaskRunner::CurrentWorkerId() {
-  if (!current_tls_.Get())
-    return 0;
-  return current_tls_.Get()->id_;
-}
-
-WorkerTaskRunner* WorkerTaskRunner::Instance() {
-  static base::LazyInstance<WorkerTaskRunner>::Leaky
-      worker_task_runner = LAZY_INSTANCE_INITIALIZER;
-  return worker_task_runner.Pointer();
-}
-
-void WorkerTaskRunner::AddStopObserver(Observer* obs) {
-  DCHECK(CurrentWorkerId() > 0);
-  current_tls_.Get()->stop_observers_.AddObserver(obs);
-}
-
-void WorkerTaskRunner::RemoveStopObserver(Observer* obs) {
-  DCHECK(CurrentWorkerId() > 0);
-  current_tls_.Get()->stop_observers_.RemoveObserver(obs);
-}
-
-WorkerTaskRunner::~WorkerTaskRunner() {
-}
-
-void WorkerTaskRunner::OnWorkerRunLoopStarted(const WebWorkerRunLoop& loop) {
-  DCHECK(!current_tls_.Get());
-  int id = id_sequence_.GetNext();
-  current_tls_.Set(new ThreadLocalState(id, loop));
-
-  base::AutoLock locker_(loop_map_lock_);
-  loop_map_[id] = loop;
-}
-
-void WorkerTaskRunner::OnWorkerRunLoopStopped(const WebWorkerRunLoop& loop) {
-  DCHECK(current_tls_.Get());
-  FOR_EACH_OBSERVER(Observer, current_tls_.Get()->stop_observers_,
-                    OnWorkerRunLoopStopped());
-  {
-    base::AutoLock locker(loop_map_lock_);
-    DCHECK(loop_map_[CurrentWorkerId()] == loop);
-    loop_map_.erase(CurrentWorkerId());
-  }
-  delete current_tls_.Get();
-  current_tls_.Set(NULL);
-}
-
-}  // namespace webkit_glue
diff --git a/webkit/child/worker_task_runner.h b/webkit/child/worker_task_runner.h
deleted file mode 100644
index bc7bc64..0000000
--- a/webkit/child/worker_task_runner.h
+++ /dev/null
@@ -1,59 +0,0 @@
-// 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.
-
-#ifndef WEBKIT_CHILD_WORKER_TASK_RUNNER_H_
-#define WEBKIT_CHILD_WORKER_TASK_RUNNER_H_
-
-#include <map>
-
-#include "base/atomic_sequence_num.h"
-#include "base/callback_forward.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_local.h"
-#include "third_party/WebKit/public/platform/WebWorkerRunLoop.h"
-#include "webkit/child/webkit_child_export.h"
-
-namespace webkit_glue {
-
-class WEBKIT_CHILD_EXPORT WorkerTaskRunner {
- public:
-  WorkerTaskRunner();
-
-  bool PostTask(int id, const base::Closure& task);
-  int PostTaskToAllThreads(const base::Closure& task);
-  int CurrentWorkerId();
-  static WorkerTaskRunner* Instance();
-
-  class WEBKIT_CHILD_EXPORT Observer {
-   public:
-    virtual ~Observer() {}
-    virtual void OnWorkerRunLoopStopped() = 0;
-  };
-  // Add/Remove an observer that will get notified when the current worker run
-  // loop is stopping. This observer will not get notified when other threads
-  // are stopping.  It's only valid to call these on a worker thread.
-  void AddStopObserver(Observer* observer);
-  void RemoveStopObserver(Observer* observer);
-
-  void OnWorkerRunLoopStarted(const blink::WebWorkerRunLoop& loop);
-  void OnWorkerRunLoopStopped(const blink::WebWorkerRunLoop& loop);
-
- private:
-  friend class WorkerTaskRunnerTest;
-
-  typedef std::map<int, blink::WebWorkerRunLoop> IDToLoopMap;
-
-  ~WorkerTaskRunner();
-
-  struct ThreadLocalState;
-  base::ThreadLocalPointer<ThreadLocalState> current_tls_;
-
-  base::AtomicSequenceNumber id_sequence_;
-  IDToLoopMap loop_map_;
-  base::Lock loop_map_lock_;
-};
-
-}  // namespace webkit_glue
-
-#endif // WEBKIT_CHILD_WORKER_TASK_RUNNER_H_
diff --git a/webkit/child/worker_task_runner_unittest.cc b/webkit/child/worker_task_runner_unittest.cc
deleted file mode 100644
index 9bfb0e3..0000000
--- a/webkit/child/worker_task_runner_unittest.cc
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright (c) 2011 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 "base/logging.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "webkit/child/worker_task_runner.h"
-
-namespace webkit_glue {
-
-class WorkerTaskRunnerTest : public testing::Test {
- public:
-  void FakeStart() {
-    task_runner_.OnWorkerRunLoopStarted(blink::WebWorkerRunLoop());
-  }
-  void FakeStop() {
-    task_runner_.OnWorkerRunLoopStopped(blink::WebWorkerRunLoop());
-  }
-  WorkerTaskRunner task_runner_;
-};
-
-class MockObserver : public WorkerTaskRunner::Observer {
- public:
-  MOCK_METHOD0(OnWorkerRunLoopStopped, void());
-  void RemoveSelfOnNotify() {
-    ON_CALL(*this, OnWorkerRunLoopStopped()).WillByDefault(
-        testing::Invoke(this, &MockObserver::RemoveSelf));
-  }
-  void RemoveSelf() {
-    runner_->RemoveStopObserver(this);
-  }
-  WorkerTaskRunner* runner_;
-};
-
-TEST_F(WorkerTaskRunnerTest, BasicObservingAndWorkerId) {
-  ASSERT_EQ(0, task_runner_.CurrentWorkerId());
-  MockObserver o;
-  EXPECT_CALL(o, OnWorkerRunLoopStopped()).Times(1);
-  FakeStart();
-  task_runner_.AddStopObserver(&o);
-  ASSERT_LT(0, task_runner_.CurrentWorkerId());
-  FakeStop();
-}
-
-TEST_F(WorkerTaskRunnerTest, CanRemoveSelfDuringNotification) {
-  MockObserver o;
-  o.RemoveSelfOnNotify();
-  o.runner_ = &task_runner_;
-  EXPECT_CALL(o, OnWorkerRunLoopStopped()).Times(1);
-  FakeStart();
-  task_runner_.AddStopObserver(&o);
-  FakeStop();
-}
-
-}