Revert of Implement and test task runners in RasterWorkerPool. (patchset #9 id:160001 of https://codereview.chromium.org/1254003003/ )

Reason for revert:
Suspected of breaking Linux Tests (dbg) bot. RasterWorkerPool_SequencedTaskRunnerTest_0.SequentialNestable is failing. http://build.chromium.org/p/chromium.webkit/builders/Linux%20Tests%20%28dbg%29/builds/1246

Original issue's description:
> Implement and test task runners in RasterWorkerPool.
>
> This CL moves RasterWorkerPool outside render_thread_impl.h and
> in its own file, implements TaskRunner and SequencedTaskRunner
> on top of it and properly tests the two implementations.
>
> BUG=
> CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel
>
> Committed: https://crrev.com/37808ab81754acebe81aaa14c87ab328e77e2c46
> Cr-Commit-Position: refs/heads/master@{#341654}

TBR=dalecurtis@chromium.org,piman@chromium.org,reveman@chromium.org,dcastagna@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1270093003

Cr-Commit-Position: refs/heads/master@{#341701}

1 files changed, 0 insertions, 71 deletions

diff --git a/content/renderer/raster_worker_pool_unittest.cc b/content/renderer/raster_worker_pool_unittest.cc
deleted file mode 100644
index 926ba2b..0000000
--- a/content/renderer/raster_worker_pool_unittest.cc
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright 2015 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/test/sequenced_task_runner_test_template.h"
-#include "base/test/task_runner_test_template.h"
-#include "base/threading/simple_thread.h"
-#include "content/renderer/raster_worker_pool.h"
-
-namespace base {
-namespace {
-
-// Number of threads spawned in tests.
-const int kNumThreads = 4;
-
-class RasterWorkerPoolTestDelegate {
- public:
-  RasterWorkerPoolTestDelegate()
-      : raster_worker_pool_(new content::RasterWorkerPool()) {}
-
-  void StartTaskRunner() {
-    raster_worker_pool_->Start(kNumThreads, SimpleThread::Options());
-  }
-
-  scoped_refptr<content::RasterWorkerPool> GetTaskRunner() {
-    return raster_worker_pool_;
-  }
-
-  void StopTaskRunner() {
-    raster_worker_pool_->GetTaskGraphRunner()->FlushForTesting();
-  }
-
-  ~RasterWorkerPoolTestDelegate() { raster_worker_pool_->Shutdown(); }
-
- private:
-  scoped_refptr<content::RasterWorkerPool> raster_worker_pool_;
-};
-
-INSTANTIATE_TYPED_TEST_CASE_P(RasterWorkerPool,
-                              TaskRunnerTest,
-                              RasterWorkerPoolTestDelegate);
-
-class RasterWorkerPoolSequencedTestDelegate {
- public:
-  RasterWorkerPoolSequencedTestDelegate()
-      : raster_worker_pool_(new content::RasterWorkerPool()) {}
-
-  void StartTaskRunner() {
-    raster_worker_pool_->Start(kNumThreads, SimpleThread::Options());
-  }
-
-  scoped_refptr<base::SequencedTaskRunner> GetTaskRunner() {
-    return raster_worker_pool_->CreateSequencedTaskRunner();
-  }
-
-  void StopTaskRunner() {
-    raster_worker_pool_->GetTaskGraphRunner()->FlushForTesting();
-  }
-
-  ~RasterWorkerPoolSequencedTestDelegate() { raster_worker_pool_->Shutdown(); }
-
- private:
-  scoped_refptr<content::RasterWorkerPool> raster_worker_pool_;
-};
-
-INSTANTIATE_TYPED_TEST_CASE_P(RasterWorkerPool,
-                              SequencedTaskRunnerTest,
-                              RasterWorkerPoolSequencedTestDelegate);
-
-}  // namespace
-}  // namespace base