Revert of Simplify FrameLoader::Clear(), remove FrameLoader::check_timer_

third_party/WebKit/Source/core/loader/FrameLoader.h

Index: third_party/WebKit/Source/core/loader/FrameLoader.h
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.h b/third_party/WebKit/Source/core/loader/FrameLoader.h
index e2b159cd43a991ddeb0796b68b9614a6ddb95d2b..75fbc7e09158957c78863265dea813682f81d9c8 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.h
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.h
@@ -42,6 +42,7 @@
 #include "core/loader/FrameLoaderTypes.h"
 #include "core/loader/HistoryItem.h"
 #include "core/loader/NavigationPolicy.h"
+#include "platform/Timer.h"
 #include "platform/heap/Handle.h"
 #include "platform/instrumentation/tracing/TracedValue.h"
 #include "platform/loader/fetch/ResourceLoaderOptions.h"
@@ -226,6 +227,8 @@
   static void SetReferrerForFrameRequest(FrameLoadRequest&);
 
  private:
+  void CheckTimerFired(TimerBase*);
+
   bool PrepareRequestForThisFrame(FrameLoadRequest&);
   FrameLoadType DetermineFrameLoadType(const FrameLoadRequest&);
 
@@ -288,6 +291,8 @@
 
   bool in_stop_all_loaders_;
 
+  TaskRunnerTimer<FrameLoader> check_timer_;
+
   SandboxFlags forced_sandbox_flags_;
 
   bool dispatching_did_clear_window_object_in_main_world_;