improvements of the FPS counter in the HUDLayer

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 2e467405dc8ae5ee8901d06bf88be975ceb48b49..8d60ea9c1502137ecc0143665cf35de51acf86ef 100644
--- a/cc/heads_up_display_layer.cc
+++ b/cc/heads_up_display_layer.cc
@@ -21,7 +21,7 @@ HeadsUpDisplayLayer::HeadsUpDisplayLayer()
     : Layer()
 {
 
-    setBounds(gfx::Size(512, 128));
+    setBounds(gfx::Size(256, 128));
 }
 
 HeadsUpDisplayLayer::~HeadsUpDisplayLayer()
@@ -39,7 +39,7 @@ void HeadsUpDisplayLayer::update(ResourceUpdateQueue&, const OcclusionTracker*,
         int height = std::min(maxTextureSize, layerTreeHost()->deviceViewportSize().height());
         bounds = gfx::Size(width, height);
     } else {
-        bounds = gfx::Size(512, 128);
+        bounds = gfx::Size(256, 128);
     }
 
     setBounds(bounds);