cc: handling debug settings in new LayerTreeDebugState structure

cc/layer_tree_host_impl.cc

Index: cc/layer_tree_host_impl.cc
diff --git a/cc/layer_tree_host_impl.cc b/cc/layer_tree_host_impl.cc
index 8c2df3c2052a7f927423534bf3c84204da99f5fc..388a78bdec76e86bdc5277f373c85a2f25945a55 100644
--- a/cc/layer_tree_host_impl.cc
+++ b/cc/layer_tree_host_impl.cc
@@ -12,7 +12,6 @@
 #include "cc/damage_tracker.h"
 #include "cc/debug_rect_history.h"
 #include "cc/delay_based_time_source.h"
-#include "cc/font_atlas.h"
 #include "cc/frame_rate_counter.h"
 #include "cc/geometry.h"
 #include "cc/gl_renderer.h"
@@ -402,10 +401,12 @@ bool LayerTreeHostImpl::calculateRenderPasses(FrameData& frame)
     OcclusionTrackerImpl occlusionTracker(m_rootLayerImpl->renderSurface()->contentRect(), recordMetricsForFrame);
     occlusionTracker.setMinimumTrackingSize(m_settings.minimumOcclusionTrackingSize);
 
-    if (settings().showOccludingRects)
-        occlusionTracker.setOccludingScreenSpaceRectsContainer(&frame.occludingScreenSpaceRects);
-    if (settings().showNonOccludingRects)
-        occlusionTracker.setNonOccludingScreenSpaceRectsContainer(&frame.nonOccludingScreenSpaceRects);
+    if (m_hudLayerImpl) {
+        if (m_hudLayerImpl->settings().showOccludingRects)
+            occlusionTracker.setOccludingScreenSpaceRectsContainer(&frame.occludingScreenSpaceRects);
+        if (m_hudLayerImpl->settings().showNonOccludingRects)
+            occlusionTracker.setNonOccludingScreenSpaceRectsContainer(&frame.nonOccludingScreenSpaceRects);
+    }
 
     // Add quads to the Render passes in FrontToBack order to allow for testing occlusion and performing culling during the tree walk.
     typedef LayerIterator<LayerImpl, std::vector<LayerImpl*>, RenderSurfaceImpl, LayerIteratorActions::FrontToBack> LayerIteratorType;
@@ -711,13 +712,13 @@ void LayerTreeHostImpl::drawLayers(const FrameData& frame)
     // RenderWidget.
     m_fpsCounter->markBeginningOfFrame(base::TimeTicks::Now());
 
-    if (m_settings.showDebugRects())
-        m_debugRectHistory->saveDebugRectsForCurrentFrame(m_rootLayerImpl.get(), *frame.renderSurfaceLayerList, frame.occludingScreenSpaceRects, frame.nonOccludingScreenSpaceRects, settings());
-
     // Because the contents of the HUD depend on everything else in the frame, the contents
     // of its texture are updated as the last thing before the frame is drawn.
-    if (m_hudLayerImpl)
+    if (m_hudLayerImpl && m_hudLayerImpl->settings().showDebugInfo()) {

[egraether, 2012/11/20 21:30:30]

prevent updating when nothing is displayed.

+        if (m_hudLayerImpl->settings().showDebugRects())
+            m_debugRectHistory->saveDebugRectsForCurrentFrame(m_rootLayerImpl.get(), *frame.renderSurfaceLayerList, frame.occludingScreenSpaceRects, frame.nonOccludingScreenSpaceRects, m_hudLayerImpl->settings());
         m_hudLayerImpl->updateHudTexture(m_resourceProvider.get());
+    }
 
     m_renderer->drawFrame(frame.renderPasses, frame.renderPassesById);