gdata: Upload locally modified file in the correct size.

chrome/browser/chromeos/gdata/gdata_file_system.h

Index: chrome/browser/chromeos/gdata/gdata_file_system.h
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system.h b/chrome/browser/chromeos/gdata/gdata_file_system.h
index 2ee2ec838075f51c4878afc93ec4370acf71e671..0ae0f20b5ff82a5ed49060b00b107ccd098dd771 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system.h
+++ b/chrome/browser/chromeos/gdata/gdata_file_system.h
@@ -746,10 +746,19 @@ class GDataFileSystem : public GDataFileSystemInterface,
       const std::string& resource_id,
       const std::string& md5,
       const FilePath& cache_file_path);
+  // Callback for getting the size of the cache file in the blocking pool.
+  void OnGetFileSizeCompleteForUpdateFile(
+      const FileOperationCallback& callback,
+      const std::string& resource_id,
+      const std::string& md5,
+      const FilePath& cache_file_path,
+      GDataFileError* error,
+      int64* file_size);
   // Callback for GDataRootDirectory::GetEntryByResourceIdAsync.
   void OnGetFileCompleteForUpdateFileByEntry(
     const FileOperationCallback& callback,
     const std::string& md5,
+    int64 file_size,
     const FilePath& cache_file_path,
     GDataEntry* entry);