WIP POC blob transport over mojo

third_party/WebKit/public/platform/WebBlobRegistry.h

Index: third_party/WebKit/public/platform/WebBlobRegistry.h
diff --git a/third_party/WebKit/public/platform/WebBlobRegistry.h b/third_party/WebKit/public/platform/WebBlobRegistry.h
index 19a65b3f9fc4c0c39bd5a2ccba2139d5ba219aa6..df0b9c334775f30fc14e3b68d9652fb982c8e1c6 100644
--- a/third_party/WebKit/public/platform/WebBlobRegistry.h
+++ b/third_party/WebKit/public/platform/WebBlobRegistry.h
@@ -36,6 +36,10 @@
 
 #include <memory>
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace blink {
 
 class WebBlobData;
@@ -82,6 +86,8 @@ class WebBlobRegistry {
 
   virtual ~WebBlobRegistry() {}
 
+  virtual base::SingleThreadTaskRunner* GetIORunner() { return nullptr; }
+
   // TODO(dmurph): Deprecate and migrate to createBuilder
   virtual void RegisterBlobData(const WebString& uuid, const WebBlobData&) {}