Fix an uninit in CursorLoaderX11Test.ScaleAndRotate test.

BUG=362138
TBR=sky@chromium.org
NOTRY=true

Review URL: https://codereview.chromium.org/233313004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263013 0039d316-1c4b-4281-b951-d872f2087c98

ui/base/cursor/cursor_loader_x11_unittest.cc

@@ -18,6 +18,7 @@ TEST(CursorLoaderX11Test, ScaleAndRotate) {
   SkBitmap bitmap;
   bitmap.setConfig(SkBitmap::kARGB_8888_Config, 10, 5);
   bitmap.allocPixels();
+  bitmap.eraseColor(SK_ColorBLACK);
 
   gfx::Point hotpoint(3,4);