cc: fix HudLayer to be sized by device

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 cfbfea7af0825b4548419bb670eb20f270f0fb4e..72a8a6b014e0d11cee23b3d9db6dc584735ab28e 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()->layoutViewportSize().width());
-        int height = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().height());
+        int width = std::min(maxTextureSize, static_cast<int>(layerTreeHost()->deviceViewportSize().width() / layerTreeHost()->deviceScaleFactor()));

[danakj, 2013/02/20 02:46:08]

split these "static_cast<>(dVS.width/lTH.dSF)" parts out into temp vars so they
get a name (deviceViewportInLayoutPixelsWidth|Height?) and can be reused in both
the if/else parts.

+        int height = std::min(maxTextureSize, static_cast<int>(layerTreeHost()->deviceViewportSize().height() / layerTreeHost()->deviceScaleFactor()));
         bounds = gfx::Size(width, height);
     } else {
         bounds = gfx::Size(256, 256);
-        matrix.Translate(layerTreeHost()->layoutViewportSize().width() - 256, 0);
+        matrix.Translate(static_cast<int>(layerTreeHost()->deviceViewportSize().width() / layerTreeHost()->deviceScaleFactor()) - 256, 0);
     }
 
     setBounds(bounds);