[Streams] Pass WebDataConsumerHandle when the response arrives.

Source/core/fileapi/FileReaderLoader.cpp

Index: Source/core/fileapi/FileReaderLoader.cpp
diff --git a/Source/core/fileapi/FileReaderLoader.cpp b/Source/core/fileapi/FileReaderLoader.cpp
index 04278920906db48d9ee8341c8fc5a6c89474f6bc..af8fac7f6545741d89eaf9f0acdb5012e29aee6c 100644
--- a/Source/core/fileapi/FileReaderLoader.cpp
+++ b/Source/core/fileapi/FileReaderLoader.cpp
@@ -171,8 +171,9 @@ void FileReaderLoader::cleanup()
     }
 }
 
-void FileReaderLoader::didReceiveResponse(unsigned long, const ResourceResponse& response)
+void FileReaderLoader::didReceiveResponse(unsigned long, const ResourceResponse& response, PassOwnPtr<WebDataConsumerHandle> handle)
 {
+    ASSERT_UNUSED(handle, !handle);

[Mike West, 2014/11/04 15:09:31]

Why this ASSERT?

[yhirano, 2014/11/05 04:38:40]

I'm planning to use this parameter only for XHR and fetch API (at least, at
first). FileReaderLoaderClient has no interface for WebDataConsumerHandle and
having non-null handle here means something wrong happens. Hence I added this
assertion.

     if (response.httpStatusCode() != 200) {
         failed(httpStatusCodeToErrorCode(response.httpStatusCode()));
         return;