Pepper quota support

webkit/fileapi/file_system_file_util_proxy.h

Index: webkit/fileapi/file_system_file_util_proxy.h
diff --git a/webkit/fileapi/file_system_file_util_proxy.h b/webkit/fileapi/file_system_file_util_proxy.h
index e3763145e29f579c13c8ea1cee94bb851688784b..e79c19a40d91d6052caa1509335a31553dd2570a 100644
--- a/webkit/fileapi/file_system_file_util_proxy.h
+++ b/webkit/fileapi/file_system_file_util_proxy.h
@@ -33,7 +33,11 @@ using base::PlatformFileInfo;
 class FileSystemFileUtilProxy {
  public:
   typedef base::FileUtilProxy::StatusCallback StatusCallback;
-  typedef base::FileUtilProxy::CreateOrOpenCallback CreateOrOpenCallback;
+  typedef Callback4<PlatformFileError /* error code */,
+                    base::PassPlatformFile,
+                    bool /* created */,
+                    int64 /* file_size, or -1 when there was an error. */
+                    >::Type CreateOrOpenCallback;
   typedef base::FileUtilProxy::EnsureFileExistsCallback
     EnsureFileExistsCallback;
   typedef Callback3<PlatformFileError /* error code */,
@@ -45,16 +49,19 @@ class FileSystemFileUtilProxy {
                     >::Type GetLocalPathCallback;
   typedef base::FileUtilProxy::ReadDirectoryCallback ReadDirectoryCallback;
 
-  // Creates or opens a file with the given flags.  It is invalid to pass NULL
-  // for the callback.
+  // Creates or opens a file with the given flags.
+  // It is invalid to pass NULL for the callback.
   // If PLATFORM_FILE_CREATE is set in |file_flags| it always tries to create
   // a new file at the given |file_path| and calls back with
   // PLATFORM_FILE_ERROR_FILE_EXISTS if the |file_path| already exists.
-  static bool CreateOrOpen(const FileSystemOperationContext& context,
-                           scoped_refptr<MessageLoopProxy> message_loop_proxy,
-                           const FilePath& file_path,
-                           int file_flags,
-                           CreateOrOpenCallback* callback);
+  // |file_size| parameter of the CreateOrOpenCallback is set to -1 if
+  // the error code is not PLATFORM_FILE_OK.
+  static bool CreateOrOpenAndQuerySize(
+      const FileSystemOperationContext& context,
+      scoped_refptr<MessageLoopProxy> message_loop_proxy,
+      const FilePath& file_path,
+      int file_flags,
+      CreateOrOpenCallback* callback);
 
   // Close the given file handle.
   static bool Close(const FileSystemOperationContext& context,