Enable VizHitTestDrawQuad feature by default on TOT for cros.

The OOPIF bug on cros was fixed
https://bugs.chromium.org/p/chromium/issues/detail?id=877762,
re-enabling VizHitTestDrawQuad by default for cros platforms.

Bug: 804888
Change-Id: I93cd237bc0631b6e1f77ae59232937697ce45ef2
Reviewed-on: https://chromium-review.googlesource.com/c/1337644Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Commit-Queue: Ria Jiang <riajiang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608637}

components/viz/common/features.cc

@@ -30,13 +30,8 @@ const base::Feature kVizDisplayCompositor{"VizDisplayCompositor",
                                           base::FEATURE_DISABLED_BY_DEFAULT};
 
 // Enables running the Viz-assisted hit-test logic.
-#if defined(OS_CHROMEOS)
-const base::Feature kEnableVizHitTestDrawQuad{
-    "VizHitTestDrawQuad", base::FEATURE_DISABLED_BY_DEFAULT};
-#else
 const base::Feature kEnableVizHitTestDrawQuad{"VizHitTestDrawQuad",
                                               base::FEATURE_ENABLED_BY_DEFAULT};
-#endif
 
 const base::Feature kEnableVizHitTestSurfaceLayer{
     "VizHitTestSurfaceLayer", base::FEATURE_DISABLED_BY_DEFAULT};