Remove non-chromium code from TestWebKitAPI

Tools/TestWebKitAPI/mac/SyntheticBackingScaleFactorWindow.h

Index: Tools/TestWebKitAPI/mac/SyntheticBackingScaleFactorWindow.h
diff --git a/Tools/TestWebKitAPI/mac/SyntheticBackingScaleFactorWindow.h b/Tools/TestWebKitAPI/mac/SyntheticBackingScaleFactorWindow.h
deleted file mode 100644
index e83e653dfa9ee4d836503cd91754a565c8b7c5d1..0000000000000000000000000000000000000000
--- a/Tools/TestWebKitAPI/mac/SyntheticBackingScaleFactorWindow.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2011 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-@interface SyntheticBackingScaleFactorWindow : NSWindow {
-    CGFloat _backingScaleFactor;
-}
-- (void)setBackingScaleFactor:(CGFloat)scaleFactor;
-@end