Implement upload progress handling in Mojo loading

content/browser/loader/test_url_loader_client.h

Index: content/browser/loader/test_url_loader_client.h
diff --git a/content/browser/loader/test_url_loader_client.h b/content/browser/loader/test_url_loader_client.h
index b7d5ce488a56a9259228eaadbca491771fea2ec5..9df36010e3f7a1fa6b6b38ba3771854169c2a330 100644
--- a/content/browser/loader/test_url_loader_client.h
+++ b/content/browser/loader/test_url_loader_client.h
@@ -36,6 +36,9 @@ class TestURLLoaderClient final : public mojom::URLLoaderClient {
   void OnDataDownloaded(int64_t data_length, int64_t encoded_length) override;
   void OnReceiveCachedMetadata(const std::vector<uint8_t>& data) override;
   void OnTransferSizeUpdated(int32_t transfer_size_diff) override;
+  void OnUploadProgress(int64_t current_position,
+                        int64_t total_size,
+                        const base::Closure& ack_callback) override;
   void OnStartLoadingResponseBody(
       mojo::ScopedDataPipeConsumerHandle body) override;
   void OnComplete(const ResourceRequestCompletionStatus& status) override;
@@ -61,6 +64,8 @@ class TestURLLoaderClient final : public mojom::URLLoaderClient {
     return encoded_download_data_length_;
   }
   int64_t body_transfer_size() const { return body_transfer_size_; }
+  int64_t current_upload_position() const { return current_upload_position_; }
+  int64_t total_upload_size() const { return total_upload_size_; }
 
   void ClearHasReceivedRedirect();
   // Creates an AssociatedPtrInfo, binds it to |*this| and returns it. The
@@ -100,6 +105,8 @@ class TestURLLoaderClient final : public mojom::URLLoaderClient {
   int64_t download_data_length_ = 0;
   int64_t encoded_download_data_length_ = 0;
   int64_t body_transfer_size_ = 0;
+  int64_t current_upload_position_ = 0;
+  int64_t total_upload_size_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestURLLoaderClient);
 };