Rename OperationObserver to OperationDelegate

chrome/browser/chromeos/drive/file_system/create_file_operation.h

Index: chrome/browser/chromeos/drive/file_system/create_file_operation.h
diff --git a/chrome/browser/chromeos/drive/file_system/create_file_operation.h b/chrome/browser/chromeos/drive/file_system/create_file_operation.h
index 85c6f043e964c79a0e6568e1b038081a6b94423f..d515ac793e671699207fb3913b39d20e8a94fc2f 100644
--- a/chrome/browser/chromeos/drive/file_system/create_file_operation.h
+++ b/chrome/browser/chromeos/drive/file_system/create_file_operation.h
@@ -25,7 +25,7 @@ class ResourceEntry;
 
 namespace file_system {
 
-class OperationObserver;
+class OperationDelegate;
 
 // This class encapsulates the drive CreateFile function.  It is responsible for
 // sending the request to the drive API, then updating the local state and
@@ -33,7 +33,7 @@ class OperationObserver;
 class CreateFileOperation {
  public:
   CreateFileOperation(base::SequencedTaskRunner* blocking_task_runner,
-                      OperationObserver* observer,
+                      OperationDelegate* delegate,
                       internal::ResourceMetadata* metadata);
   ~CreateFileOperation();
 
@@ -58,7 +58,7 @@ class CreateFileOperation {
                                        FileError error);
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
-  OperationObserver* observer_;
+  OperationDelegate* delegate_;
   internal::ResourceMetadata* metadata_;
 
   // Note: This should remain the last member so it'll be destroyed and