toggle FPS counter in compositor

cc/heads_up_display_layer_impl.cc

Index: cc/heads_up_display_layer_impl.cc
diff --git a/cc/heads_up_display_layer_impl.cc b/cc/heads_up_display_layer_impl.cc
index 4444c9b0306ce2317fd395bc429954b8efc8e3fa..1c0c5fec66d83b407e486e4ce0c6abb4207bba07 100644
--- a/cc/heads_up_display_layer_impl.cc
+++ b/cc/heads_up_display_layer_impl.cc
@@ -46,6 +46,7 @@ HeadsUpDisplayLayerImpl::HeadsUpDisplayLayerImpl(int id)
     : LayerImpl(id)
     , m_averageFPS(0)
     , m_stdDeviation(0)
+    , m_showFPSCounter(false)
 {
 }
 
@@ -58,6 +59,11 @@ void HeadsUpDisplayLayerImpl::setFontAtlas(scoped_ptr<FontAtlas> fontAtlas)
     m_fontAtlas = fontAtlas.Pass();
 }
 
+void HeadsUpDisplayLayerImpl::setShowFPSCounter(bool show)
+{
+    m_showFPSCounter = show;
+}
+
 void HeadsUpDisplayLayerImpl::willDraw(ResourceProvider* resourceProvider)
 {
     LayerImpl::willDraw(resourceProvider);
@@ -148,7 +154,7 @@ void HeadsUpDisplayLayerImpl::drawHudContents(SkCanvas* canvas)
 
     int platformLayerTreeTop = 0;
 
-    if (settings.showFPSCounter)
+    if (m_showFPSCounter)
         platformLayerTreeTop = drawFPSCounter(canvas, layerTreeHostImpl()->fpsCounter());
 
     if (settings.showPlatformLayerTree && m_fontAtlas.get()) {