Forward input tasks to the Blink scheduler

content/renderer/input/input_event_filter.cc

Index: content/renderer/input/input_event_filter.cc
diff --git a/content/renderer/input/input_event_filter.cc b/content/renderer/input/input_event_filter.cc
index fa31658a74bcaeab9f63aae77d9c4c1f00208f1a..fc99e1c5fdeb1bd0d0991d4e37c5a48035970901 100644
--- a/content/renderer/input/input_event_filter.cc
+++ b/content/renderer/input/input_event_filter.cc
@@ -10,6 +10,7 @@
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/message_loop/message_loop_proxy.h"
+#include "base/single_thread_task_runner.h"
 #include "cc/input/input_handler.h"
 #include "content/common/input/did_overscroll_params.h"
 #include "content/common/input/web_input_event_traits.h"
@@ -41,9 +42,10 @@ namespace content {
 
 InputEventFilter::InputEventFilter(
     IPC::Listener* main_listener,
+    const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
     const scoped_refptr<base::MessageLoopProxy>& target_loop)
-    : main_loop_(base::MessageLoopProxy::current()),
-      main_listener_(main_listener),
+    : main_listener_(main_listener),
+      main_task_runner_(main_task_runner),
       sender_(NULL),
       target_loop_(target_loop),
       overscroll_notifications_enabled_(false),
@@ -55,7 +57,6 @@ InputEventFilter::InputEventFilter(
 }
 
 void InputEventFilter::SetBoundHandler(const Handler& handler) {
-  DCHECK(main_loop_->BelongsToCurrentThread());
   handler_ = handler;
 }
 
@@ -148,7 +149,7 @@ void InputEventFilter::ForwardToHandler(const IPC::Message& message) {
         "input",
         "InputEventFilter::ForwardToHandler::ForwardToMainListener",
         TRACE_EVENT_SCOPE_THREAD);
-    main_loop_->PostTask(
+    main_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&InputEventFilter::ForwardToMainListener,
                    this, message));
@@ -181,7 +182,7 @@ void InputEventFilter::ForwardToHandler(const IPC::Message& message) {
         TRACE_EVENT_SCOPE_THREAD);
     IPC::Message new_msg = InputMsg_HandleInputEvent(
         routing_id, event, latency_info, is_keyboard_shortcut);
-    main_loop_->PostTask(
+    main_task_runner_->PostTask(
         FROM_HERE,
         base::Bind(&InputEventFilter::ForwardToMainListener,
                    this, new_msg));