Implement upload progress handling in Mojo loading

content/browser/loader/mojo_async_resource_handler.h

Index: content/browser/loader/mojo_async_resource_handler.h
diff --git a/content/browser/loader/mojo_async_resource_handler.h b/content/browser/loader/mojo_async_resource_handler.h
index ebb38b2f3da220cf986b8ff2e49a4fd40deb8c2c..d4a4487b7f64526b6de5b3f00bf4c8409069c470 100644
--- a/content/browser/loader/mojo_async_resource_handler.h
+++ b/content/browser/loader/mojo_async_resource_handler.h
@@ -13,14 +13,15 @@
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
-#include "base/timer/timer.h"
 #include "content/browser/loader/resource_handler.h"
+#include "content/browser/loader/upload_progress_tracker.h"
 #include "content/common/content_export.h"
 #include "content/common/url_loader.mojom.h"
 #include "mojo/public/cpp/bindings/associated_binding.h"
 #include "mojo/public/cpp/system/watcher.h"
 #include "net/base/io_buffer.h"
-#include "url/gurl.h"
+
+class GURL;
 
 namespace net {
 class IOBufferWithSize;
@@ -64,7 +65,7 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
                            bool* defer) override;
   void OnDataDownloaded(int bytes_downloaded) override;
 
-  // mojom::URLLoader implementation
+  // mojom::URLLoader implementation:
   void FollowRedirect() override;
 
   void OnWritableForTesting();
@@ -102,6 +103,8 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
 
   void OnTransfer(mojom::URLLoaderAssociatedRequest mojo_request,
                   mojom::URLLoaderClientAssociatedPtr url_loader_client);
+  void SendUploadProgress(const net::UploadProgress& progress);
+  void OnUploadProgressACK();
 
   ResourceDispatcherHostImpl* rdh_;
   mojo::AssociatedBinding<mojom::URLLoader> binding_;
@@ -122,6 +125,8 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
   size_t buffer_bytes_read_ = 0;
   scoped_refptr<SharedWriter> shared_writer_;
 
+  std::unique_ptr<UploadProgressTracker> upload_progress_tracker_;
+
   base::WeakPtrFactory<MojoAsyncResourceHandler> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(MojoAsyncResourceHandler);
 };