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 894ff848c0c1faf04c7c4f1aa750f6de87ec31a2..db913005c99892281c0cb6814cb1b6a84d62b9bf 100644
--- a/content/browser/loader/mojo_async_resource_handler.h
+++ b/content/browser/loader/mojo_async_resource_handler.h
@@ -13,14 +13,14 @@
 #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/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 URLRequest;
@@ -28,6 +28,7 @@ class URLRequest;
 
 namespace content {
 class ResourceDispatcherHostImpl;
+class UploadProgressTracker;
 struct ResourceResponse;
 
 // Used to complete an asynchronous resource request in response to resource
@@ -100,6 +101,8 @@ class CONTENT_EXPORT MojoAsyncResourceHandler
 
   void OnTransfer(mojom::URLLoaderAssociatedRequest mojo_request,
                   mojom::URLLoaderClientAssociatedPtr url_loader_client);
+  void OnUploadProgressACK();
+  void SendUploadProgress(int64_t current_position, int64_t total_size);
 
   ResourceDispatcherHostImpl* rdh_;
   mojo::AssociatedBinding<mojom::URLLoader> binding_;
@@ -120,6 +123,8 @@ 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);
 };