Revert of Revert "Post loading tasks on the appropriate WebFrameScheduler's queue."

content/child/blink_platform_impl.cc

Index: content/child/blink_platform_impl.cc
diff --git a/content/child/blink_platform_impl.cc b/content/child/blink_platform_impl.cc
index c8f41688a6fb8017f9075e160af300c0d5673640..3b26b612632bf59a2e29c8cd9799d80724343e73 100644
--- a/content/child/blink_platform_impl.cc
+++ b/content/child/blink_platform_impl.cc
@@ -34,6 +34,7 @@
 #include "blink/public/resources/grit/blink_image_resources.h"
 #include "blink/public/resources/grit/blink_resources.h"
 #include "components/mime_util/mime_util.h"
+#include "components/scheduler/child/web_task_runner_impl.h"
 #include "components/scheduler/child/webthread_impl_for_worker_scheduler.h"
 #include "content/app/resources/grit/content_resources.h"
 #include "content/app/strings/grit/content_strings.h"
@@ -478,7 +479,8 @@
   // data URLs to bypass the ResourceDispatcher.
   return new WebURLLoaderImpl(
       child_thread ? child_thread->resource_dispatcher() : NULL,
-      MainTaskRunnerForCurrentThread());
+      make_scoped_ptr(new scheduler::WebTaskRunnerImpl(
+            base::ThreadTaskRunnerHandle::Get())));
 }
 
 blink::WebSocketHandle* BlinkPlatformImpl::createWebSocketHandle() {
@@ -1363,16 +1365,6 @@
   return base::trace_event::TraceLog::GetInstance()->process_id();
 }
 
-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::ThreadTaskRunnerHandle::Get();
-  }
-}
-
 bool BlinkPlatformImpl::IsMainThread() const {
   return main_thread_task_runner_.get() &&
          main_thread_task_runner_->BelongsToCurrentThread();