Adds enableVirtualTime and setVirtualTimePolicy To Emulation domain.

third_party/WebKit/Source/core/fetch/FetchContext.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 32 matching lines @@
 namespace blink {
 
 class KURL;
 class MHTMLArchive;
 class ResourceError;
 class ResourceLoader;
 class ResourceResponse;
 class ResourceRequest;
 class ResourceTimingInfo;
 class WebTaskRunner;
+class WebViewScheduler;
 enum class WebCachePolicy;
 
 enum FetchResourceType {
     FetchMainResource,
     FetchSubresource
 };
 
 class CORE_EXPORT FetchContext : public GarbageCollectedFinalized<FetchContext> {
     WTF_MAKE_NONCOPYABLE(FetchContext);
 public:
@@ skipping 43 matching lines @@
     virtual SecurityOrigin* getSecurityOrigin() const { return nullptr; }
     virtual void upgradeInsecureRequest(FetchRequest&);
     virtual void addClientHintsIfNecessary(FetchRequest&);
     virtual void addCSPHeaderIfNecessary(Resource::Type, FetchRequest&);
 
     virtual MHTMLArchive* archive() const { return nullptr; }
 
     virtual ResourceLoadPriority modifyPriorityForExperiments(ResourceLoadPriority priority) { return priority; }
 
     virtual WebTaskRunner* loadingTaskRunner() const { return nullptr; }
+    virtual WebViewScheduler* webViewScheduler() const { return nullptr; }

[dgozman, 2016/06/30 17:32:08]

I find it strange to have WebViewScheduler mentioned in FetchContenxt. Isn't
this a layering violation?

[alex clarke (OOO till 29th), 2016/07/01 14:09:14]

I think this is a good point and it seems it's not necessary to add this here. 
The FrameFetchContext looks a better place to tell the WebViewScheduler about
pending fetches.

 
 protected:
     FetchContext() { }
 };
 
 } // namespace blink
 
 #endif