cc: Enable renderer compositor impl-side painting on Windows.

TBR=piman@chromium.org
BUG=169282

Review URL: https://codereview.chromium.org/488133004

Cr-Commit-Position: refs/heads/master@{#291414}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@291414 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/gpu/compositor_util.cc

@@ -197,7 +197,7 @@ bool IsImplSidePaintingEnabled() {
       switches::kEnableBleedingEdgeRenderingFastPaths))
     return true;
 
-#if defined(OS_MACOSX) || defined(OS_WIN)
+#if defined(OS_MACOSX)
   return false;
 #else
   return true;