[COPY] - Implemented API for tracking ongoing file transfers from file manager.

chrome/browser/chromeos/gdata/gdata.h

Index: chrome/browser/chromeos/gdata/gdata.h
===================================================================
--- chrome/browser/chromeos/gdata/gdata.h	(revision 127341)
+++ chrome/browser/chromeos/gdata/gdata.h	(working copy)
@@ -144,6 +144,9 @@
   // Initializes the documents service tied with |profile|.
   virtual void Initialize(Profile* profile) = 0;
 
+  // Retrieves the operation registry.
+  virtual GDataOperationRegistry* operation_registry() const = 0;
+
   // Cancels all in-flight operations.
   virtual void CancelAll() = 0;
 
@@ -269,6 +272,7 @@
 
   // DocumentsServiceInterface Overrides
   virtual void Initialize(Profile* profile) OVERRIDE;
+  virtual GDataOperationRegistry* operation_registry() const OVERRIDE;
   virtual void CancelAll() OVERRIDE;
   virtual void Authenticate(const AuthStatusCallback& callback) OVERRIDE;
   virtual void GetDocuments(const GURL& feed_url,