cc: Fix hudLayer size and paint rects scale for deviceScaleFactor != 1

cc/heads_up_display_layer.cc

Index: cc/heads_up_display_layer.cc
diff --git a/cc/heads_up_display_layer.cc b/cc/heads_up_display_layer.cc
index 14c2b9d0cfd7ceeea764c1027ba6b6d7fa7661d7..5f7ba2382dd9837af4c1fccda08e7c81da01639c 100644
--- a/cc/heads_up_display_layer.cc
+++ b/cc/heads_up_display_layer.cc
@@ -35,12 +35,12 @@ void HeadsUpDisplayLayer::update(ResourceUpdateQueue&, const OcclusionTracker*,
     matrix.MakeIdentity();
 
     if (debugState.showPlatformLayerTree || debugState.showHudRects()) {
-        int width = std::min(maxTextureSize, layerTreeHost()->deviceViewportSize().width());
-        int height = std::min(maxTextureSize, layerTreeHost()->deviceViewportSize().height());
+        int width = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().width());
+        int height = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().height());
         bounds = gfx::Size(width, height);
     } else {
         bounds = gfx::Size(256, 128);
-        matrix.Translate(layerTreeHost()->deviceViewportSize().width() - 256, 0);
+        matrix.Translate(layerTreeHost()->layoutViewportSize().width() - 256, 0);
     }
 
     setBounds(bounds);