content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/child/blink_platform_impl.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 "content/child/blink_platform_impl.h"
 
 #include <math.h>
 
 #include <vector>
 
 #include "base/allocator/allocator_extension.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
+#include "base/location.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/process/process_metrics.h"
 #include "base/rand_util.h"
+#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/sys_info.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "base/trace_event/memory_dump_manager.h"
@@ skipping 387 matching lines @@
     // This "default:" line exists to avoid compile warnings about enum
     // coverage when we add a new symbol to WebLocalizedString.h in WebKit.
     // After a planned WebKit patch is landed, we need to add a case statement
     // for the added symbol here.
     default:
       break;
   }
   return -1;
 }
 
+// TODO(skyostil): Ensure that we always have an active task runner when
+// constructing the platform.
 BlinkPlatformImpl::BlinkPlatformImpl()
-    : main_thread_task_runner_(base::MessageLoopProxy::current()),
+    : main_thread_task_runner_(base::ThreadTaskRunnerHandle::IsSet()
+                                   ? base::ThreadTaskRunnerHandle::Get()
+                                   : nullptr),
       shared_timer_func_(NULL),
       shared_timer_fire_time_(0.0),
       shared_timer_fire_time_was_set_while_suspended_(false),
       shared_timer_suspended_(0) {
   InternalInit();
 }
 
 BlinkPlatformImpl::BlinkPlatformImpl(
     scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner)
     : main_thread_task_runner_(main_thread_task_runner),
@@ skipping 919 matching lines @@
         shared_timer_fire_time_ - monotonicallyIncreasingTime());
   }
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 BlinkPlatformImpl::MainTaskRunnerForCurrentThread() {
   if (main_thread_task_runner_.get() &&
       main_thread_task_runner_->BelongsToCurrentThread()) {
     return main_thread_task_runner_;
   } else {
-    return base::MessageLoopProxy::current();
+    return base::ThreadTaskRunnerHandle::Get();
   }
 }
 
 bool BlinkPlatformImpl::IsMainThread() const {
   return main_thread_task_runner_.get() &&
          main_thread_task_runner_->BelongsToCurrentThread();
 }
 
 WebString BlinkPlatformImpl::domCodeStringFromEnum(int dom_code) {
   return WebString::fromUTF8(ui::KeycodeConverter::DomCodeToCodeString(
       static_cast<ui::DomCode>(dom_code)));
 }
 
 int BlinkPlatformImpl::domEnumFromCodeString(const WebString& code) {
   return static_cast<int>(ui::KeycodeConverter::CodeStringToDomCode(
       code.utf8().data()));
 }
 
 }  // namespace content