WIP POC blob transport over mojo

third_party/WebKit/public/platform/WebBlobRegistry.h

 /*
  * Copyright (C) 2010 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 18 matching lines @@
  */
 
 #ifndef WebBlobRegistry_h
 #define WebBlobRegistry_h
 
 #include "WebCommon.h"
 #include "WebThreadSafeData.h"
 
 #include <memory>
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace blink {
 
 class WebBlobData;
 class WebString;
 class WebURL;
 
 // Acts as singleton facade for all Blob interactions ouside of blink.  This
 // includes blob:
 // * creation,
 // * reference counting,
@@ skipping 26 matching lines @@
                                      uint64_t length,
                                      double expected_modification_time) = 0;
 
     // Builds the blob. All calls to append* are invalid after calling this
     // method.
     virtual void Build() = 0;
   };
 
   virtual ~WebBlobRegistry() {}
 
+  virtual base::SingleThreadTaskRunner* GetIORunner() { return nullptr; }
+
   // TODO(dmurph): Deprecate and migrate to createBuilder
   virtual void RegisterBlobData(const WebString& uuid, const WebBlobData&) {}
 
   // The blob is finalized (and sent to the browser) on calling build() on the
   // Builder object.
   virtual std::unique_ptr<Builder> CreateBuilder(
       const WebString& uuid,
       const WebString& content_type) = 0;
 
   virtual void AddBlobDataRef(const WebString& uuid) {}
@@ skipping 25 matching lines @@
   // so it won't receive any more data.
   virtual void AbortStream(const WebURL&) = 0;
 
   // Unregisters a stream referred by the URL.
   virtual void UnregisterStreamURL(const WebURL&) = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebBlobRegistry_h