Implement upload progress handling in Mojo loading

content/browser/loader/test_url_loader_client.cc

Index: content/browser/loader/test_url_loader_client.cc
diff --git a/content/browser/loader/test_url_loader_client.cc b/content/browser/loader/test_url_loader_client.cc
index d87ee132ce21179e89e940a4f7ef35d9ac3a8d61..4334869f8fb4077a21b7bd7c05466205c231d87d 100644
--- a/content/browser/loader/test_url_loader_client.cc
+++ b/content/browser/loader/test_url_loader_client.cc
@@ -50,6 +50,12 @@ void TestURLLoaderClient::OnTransferSizeUpdated(int32_t transfer_size_diff) {
   body_transfer_size_ += transfer_size_diff;
 }
 
+void TestURLLoaderClient::OnUploadProgress(int64_t current_position,
+                                           int64_t total_size,
+                                           const base::Closure& ack_callback) {
+  ack_callback.Run();

[mmenke, 2017/01/05 16:31:20]

No tests using this?

[tzik, 2017/01/18 12:56:43]

Now, it's used!

+}
+
 void TestURLLoaderClient::OnStartLoadingResponseBody(
     mojo::ScopedDataPipeConsumerHandle body) {
   response_body_ = std::move(body);