Change webkit/{fileapi,quota} code to use TaskRunner.

webkit/fileapi/file_system_operation.h

Index: webkit/fileapi/file_system_operation.h
diff --git a/webkit/fileapi/file_system_operation.h b/webkit/fileapi/file_system_operation.h
index 380e3ee51803e2c639695a5acfab758316f63c56..dde31583763a64f410a8f57c7d7f807e3047f02f 100644
--- a/webkit/fileapi/file_system_operation.h
+++ b/webkit/fileapi/file_system_operation.h
@@ -13,7 +13,6 @@
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop_proxy.h"
 #include "base/platform_file.h"
 #include "base/process.h"
 #include "googleurl/src/gurl.h"
@@ -130,8 +129,7 @@ class FileSystemOperation : public FileSystemOperationInterface {
   friend class FileSystemTestOriginHelper;
   friend class FileSystemQuotaTest;
 
-  FileSystemOperation(scoped_refptr<base::MessageLoopProxy> proxy,
-                      FileSystemContext* file_system_context);
+  FileSystemOperation(FileSystemContext* file_system_context);
 
   FileSystemContext* file_system_context() const {
     return operation_context_.file_system_context();
@@ -236,9 +234,6 @@ class FileSystemOperation : public FileSystemOperationInterface {
   // Returns false if there's another inflight pending operation.
   bool SetPendingOperationType(OperationType type);
 
-  // Proxy for calling file_util_proxy methods.
-  scoped_refptr<base::MessageLoopProxy> proxy_;
-
   FileSystemOperationContext operation_context_;
   FileSystemPath src_path_;
   FileSystemPath dest_path_;