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

content/child/web_data_consumer_handle_impl.h

Index: content/child/web_data_consumer_handle_impl.h
diff --git a/content/child/web_data_consumer_handle_impl.h b/content/child/web_data_consumer_handle_impl.h
index 1c93bcd5e5280ecf8e927895798ea4613e11c299..58bf441d27d344a5bb1369d894d66990d05ca3a3 100644
--- a/content/child/web_data_consumer_handle_impl.h
+++ b/content/child/web_data_consumer_handle_impl.h
@@ -9,11 +9,16 @@
 
 #include <memory>
 
+#include "base/memory/ref_counted.h"
 #include "content/common/content_export.h"
 #include "mojo/public/cpp/system/data_pipe.h"
 #include "mojo/public/cpp/system/watcher.h"
 #include "third_party/WebKit/public/platform/WebDataConsumerHandle.h"
 
+namespace base {
+class SingleThreadTaskRunner;
+}
+
 namespace content {
 
 class CONTENT_EXPORT WebDataConsumerHandleImpl final
@@ -24,7 +29,8 @@ class CONTENT_EXPORT WebDataConsumerHandleImpl final
  public:
   class CONTENT_EXPORT ReaderImpl final : public NON_EXPORTED_BASE(Reader) {
    public:
-    ReaderImpl(scoped_refptr<Context> context, Client* client);
+    ReaderImpl(scoped_refptr<Context> context, Client* client,
+               scoped_refptr<base::SingleThreadTaskRunner> task_runner);
     ~ReaderImpl() override;
     Result read(void* data,
                 size_t size,
@@ -44,7 +50,9 @@ class CONTENT_EXPORT WebDataConsumerHandleImpl final
     mojo::Watcher handle_watcher_;
     Client* client_;
   };
-  std::unique_ptr<Reader> obtainReader(Client* client) override;
+  std::unique_ptr<Reader> obtainReader(
+      Client* client,
+      std::unique_ptr<blink::WebTaskRunner> readerTaskRunner) override;
 
   explicit WebDataConsumerHandleImpl(Handle handle);
   ~WebDataConsumerHandleImpl() override;