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 c2ca740f3565e8cf3dc2d30283bbe01bdf4ca396..1c8a6d0ab3030b64fd1f66db142061219575b74c 100644
--- a/content/browser/loader/test_url_loader_client.cc
+++ b/content/browser/loader/test_url_loader_client.cc
@@ -71,6 +71,21 @@ 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) {
+  EXPECT_TRUE(ack_callback);
+  EXPECT_FALSE(has_received_response_);
+  EXPECT_FALSE(has_received_completion_);
+  EXPECT_LT(0, current_position);
+  EXPECT_LE(current_position, total_size);
+
+  has_received_upload_progress_ = true;
+  current_upload_position_ = current_position;
+  total_upload_size_ = total_size;
+  ack_callback.Run();
+}
+
 void TestURLLoaderClient::OnStartLoadingResponseBody(
     mojo::ScopedDataPipeConsumerHandle body) {
   EXPECT_TRUE(has_received_response_);