Support sending a sliced file in chromium....

webkit/glue/mock_resource_loader_bridge.h

Index: webkit/glue/mock_resource_loader_bridge.h
===================================================================
--- webkit/glue/mock_resource_loader_bridge.h	(revision 42417)
+++ webkit/glue/mock_resource_loader_bridge.h	(working copy)
@@ -21,9 +21,11 @@
   }
 
   MOCK_METHOD2(AppendDataToUpload, void(const char* data, int data_len));
-  MOCK_METHOD3(AppendFileRangeToUpload, void(const FilePath& file_path,
-                                             uint64 offset,
-                                             uint64 length));
+  MOCK_METHOD4(AppendFileRangeToUpload, 
+               void(const FilePath& file_path,
+                    uint64 offset,
+                    uint64 length,
+                    const base::Time& expected_modification_time));
   MOCK_METHOD1(SetUploadIdentifier, void(int64 identifier));
   MOCK_METHOD1(Start, bool(ResourceLoaderBridge::Peer* peer));
   MOCK_METHOD0(Cancel, void());