[Fetch API] Implement Request.formData and Response.formData.

third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h

Index: third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h
diff --git a/third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h b/third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h
index 4c5d0cf70a63a6dda8a82f9d2fba6ea4cd7f75e1..76f91321936002c1cfc5b1a9f06ab379aae841ba 100644
--- a/third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h
+++ b/third_party/WebKit/Source/modules/fetch/BytesConsumerTestUtil.h
@@ -59,6 +59,7 @@ class BytesConsumerTestUtil {
     MOCK_METHOD1(DidFetchDataLoadedBlobHandleMock,
                  void(RefPtr<BlobDataHandle>));
     MOCK_METHOD1(DidFetchDataLoadedArrayBufferMock, void(DOMArrayBuffer*));
+    MOCK_METHOD1(DidFetchDataLoadedFormDataMock, void(FormData*));
     MOCK_METHOD1(DidFetchDataLoadedString, void(const String&));
     MOCK_METHOD0(DidFetchDataLoadStream, void());
     MOCK_METHOD0(DidFetchDataLoadFailed, void());
@@ -71,6 +72,9 @@ class BytesConsumerTestUtil {
         PassRefPtr<BlobDataHandle> blob_data_handle) override {
       DidFetchDataLoadedBlobHandleMock(std::move(blob_data_handle));
     }
+    void DidFetchDataLoadedFormData(FormData* FormData) override {
+      DidFetchDataLoadedFormDataMock(FormData);
+    }
   };
 
   class Command final {