Add UploadProgressTracker unittest

content/browser/loader/async_resource_handler.h

Index: content/browser/loader/async_resource_handler.h
diff --git a/content/browser/loader/async_resource_handler.h b/content/browser/loader/async_resource_handler.h
index fb69ec7bc1e59a02d8b1dc2ac617b47cdfceebb1..a99f1af7254e8a5b876ae2979db4da7b84eba825 100644
--- a/content/browser/loader/async_resource_handler.h
+++ b/content/browser/loader/async_resource_handler.h
@@ -14,6 +14,7 @@
 #include "base/memory/ref_counted.h"
 #include "content/browser/loader/resource_handler.h"
 #include "content/browser/loader/resource_message_delegate.h"
+#include "content/browser/loader/upload_progress_tracker.h"
 #include "content/common/content_export.h"
 #include "net/base/io_buffer.h"
 #include "url/gurl.h"
@@ -25,12 +26,13 @@ class URLRequest;
 namespace content {
 class ResourceBuffer;
 class ResourceDispatcherHostImpl;
-class UploadProgressTracker;
 
 // Used to complete an asynchronous resource request in response to resource
 // load events from the resource dispatcher host.
-class CONTENT_EXPORT AsyncResourceHandler : public ResourceHandler,
-                                            public ResourceMessageDelegate {
+class CONTENT_EXPORT AsyncResourceHandler
+    : public ResourceHandler,
+      public ResourceMessageDelegate,
+      public UploadProgressTracker::Client {
  public:
   AsyncResourceHandler(net::URLRequest* request,
                        ResourceDispatcherHostImpl* rdh);
@@ -52,6 +54,11 @@ class CONTENT_EXPORT AsyncResourceHandler : public ResourceHandler,
                            bool* defer) override;
   void OnDataDownloaded(int bytes_downloaded) override;
 
+  // UploadProgressTracker::Client implementation:
+  net::UploadProgress GetUploadProgress() override;
+  void ReportUploadProgress(int64_t current_position,
+                            int64_t total_size) override;
+
  private:
   class InliningHelper;
 
@@ -67,7 +74,6 @@ class CONTENT_EXPORT AsyncResourceHandler : public ResourceHandler,
   int CalculateEncodedDataLengthToReport();
   int CalculateEncodedBodyLengthToReport();
   void RecordHistogram();
-  void SendUploadProgress(int64_t current_position, int64_t total_size);
 
   scoped_refptr<ResourceBuffer> buffer_;
   ResourceDispatcherHostImpl* rdh_;