Use per-frame TaskRunner instead of thread's default in DataConsumerHandle

third_party/WebKit/public/platform/WebDataConsumerHandle.h

Index: third_party/WebKit/public/platform/WebDataConsumerHandle.h
diff --git a/third_party/WebKit/public/platform/WebDataConsumerHandle.h b/third_party/WebKit/public/platform/WebDataConsumerHandle.h
index d1ef789ad75edf63d473ca1b95e49cc04a9277b8..19eb6d127bbd4a7dad6c51e01c95635fe76edac2 100644
--- a/third_party/WebKit/public/platform/WebDataConsumerHandle.h
+++ b/third_party/WebKit/public/platform/WebDataConsumerHandle.h
@@ -12,6 +12,8 @@
 
 namespace blink {
 
+class WebTaskRunner;
+
 // WebDataConsumerHandle represents the "consumer" side of a data pipe. A user
 // can read data from it.
 //
@@ -52,6 +54,8 @@ public:
         // function is called, i.e. it can be called more than needed.
         // One can use / destruct the associated reader in this function.
         virtual void didGetReadable() = 0;
+
+        virtual WebTaskRunner* getTaskRunner() = 0;

[yhirano, 2016/07/28 16:25:05]

Please write comments. What is this? Is it allowed to return null?

     };
 
     // This class provides a means to read data from the associated handle. A