Change WTF::TemporaryChange to be an alias for AutoReset

third_party/WebKit/Source/wtf/AutoReset.h

Index: third_party/WebKit/Source/wtf/AutoReset.h
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAndroid.cpp b/third_party/WebKit/Source/wtf/AutoReset.h
similarity index 83%
copy from third_party/WebKit/Source/platform/scroll/ScrollbarThemeAndroid.cpp
copy to third_party/WebKit/Source/wtf/AutoReset.h
index e9b00bcfd0b237a0690a33d82015359e64c4fb6d..04e91b509ec3c6c4c6b488163d34772f8b814912 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAndroid.cpp
+++ b/third_party/WebKit/Source/wtf/AutoReset.h
@@ -23,15 +23,20 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "platform/scroll/ScrollbarTheme.h"
+#ifndef AutoReset_h
+#define AutoReset_h
 
-#include "platform/scroll/ScrollbarThemeOverlay.h"
+#include "base/auto_reset.h"
 
-namespace blink {
+namespace WTF {
 
-ScrollbarTheme& ScrollbarTheme::nativeTheme()
-{
-    return ScrollbarThemeOverlay::mobileTheme();
-}
+// WTF::AutoReset is base::AutoReset. See base/auto_reset.h for documentation.
 
-} // namespace blink
+template <typename T>
+using AutoReset = base::AutoReset<T>;
+
+} // namespace WTF
+
+using WTF::AutoReset;
+
+#endif