Removes get upload progress plumbing. URLRequest queries the UploadDataStream directly.

net/base/upload_data_stream.h

Index: net/base/upload_data_stream.h
diff --git a/net/base/upload_data_stream.h b/net/base/upload_data_stream.h
index 9c269613e6952436c8cbd5ded1f309830c5816ab..437dbc594b2c4eb822df8380415a19d3696e0794 100644
--- a/net/base/upload_data_stream.h
+++ b/net/base/upload_data_stream.h
@@ -13,6 +13,7 @@
 #include "base/macros.h"
 #include "net/base/completion_callback.h"
 #include "net/base/net_export.h"
+#include "net/base/upload_progress.h"
 #include "net/log/net_log.h"
 
 namespace net {
@@ -90,6 +91,11 @@ class NET_EXPORT UploadDataStream {
   virtual const std::vector<std::unique_ptr<UploadElementReader>>*
   GetElementReaders() const;
 
+  // Returns the upload progress. If the stream was not initialized
+  // successfully, or has been reset and not yet re-initialized, returns an
+  // empty UploadProgress.
+  virtual UploadProgress GetUploadProgress() const;
+
  protected:
   // Must be called by subclasses when InitInternal and ReadInternal complete
   // asynchronously.