Revert 127317 - 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 127330)
+++ chrome/browser/chromeos/gdata/gdata.h	(working copy)
@@ -144,9 +144,6 @@
   // 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;
 
@@ -272,7 +269,6 @@
 
   // 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,