Add an experimental flag to change location.reload to take a hard-reload

third_party/WebKit/Source/core/loader/NavigationScheduler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2009 Adam Barth. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 250 matching lines @@
 };
 
 class ScheduledReload final : public ScheduledNavigation {
  public:
   static ScheduledReload* Create() { return new ScheduledReload; }
 
   void Fire(LocalFrame* frame) override {
     std::unique_ptr<UserGestureIndicator> gesture_indicator =
         CreateUserGestureIndicator();
     ResourceRequest resource_request = frame->Loader().ResourceRequestForReload(
-        kFrameLoadTypeReload, KURL(), ClientRedirectPolicy::kClientRedirect);
+        RuntimeEnabledFeatures::locationHardReloadEnabled()
+            ? kFrameLoadTypeReloadBypassingCache
+            : kFrameLoadTypeReload,
+        KURL(), ClientRedirectPolicy::kClientRedirect);
     if (resource_request.IsNull())
       return;
     FrameLoadRequest request = FrameLoadRequest(nullptr, resource_request);
     request.SetClientRedirect(ClientRedirectPolicy::kClientRedirect);
     MaybeLogScheduledNavigationClobber(
         ScheduledNavigationType::kScheduledReload, frame);
-    frame->Loader().Load(request, kFrameLoadTypeReload);
+    frame->Loader().Load(request,
+                         RuntimeEnabledFeatures::locationHardReloadEnabled()
+                             ? kFrameLoadTypeReloadBypassingCache
+                             : kFrameLoadTypeReload);
   }
 
  private:
   ScheduledReload() : ScheduledNavigation(0.0, nullptr, true, true) {}
 };
 
 class ScheduledPageBlock final : public ScheduledNavigation {
  public:
   static ScheduledPageBlock* Create(Document* origin_document, int reason) {
     return new ScheduledPageBlock(origin_document, reason);
@@ skipping 255 matching lines @@
   navigate_task_handle_.Cancel();
   redirect_.Clear();
 }
 
 DEFINE_TRACE(NavigationScheduler) {
   visitor->Trace(frame_);
   visitor->Trace(redirect_);
 }
 
 }  // namespace blink