cc: Make occlusion tracker always work in target space.

cc/test/occlusion_tracker_test_common.h

Index: cc/test/occlusion_tracker_test_common.h
diff --git a/cc/test/occlusion_tracker_test_common.h b/cc/test/occlusion_tracker_test_common.h
index 818655398cbda97b91a30801a8655dd705e387fc..06e018a6b589d524ace3317a06f35a16870a6f38 100644
--- a/cc/test/occlusion_tracker_test_common.h
+++ b/cc/test/occlusion_tracker_test_common.h
@@ -20,11 +20,11 @@ public:
     {
     }
 
-    cc::Region occlusionInScreenSpace() const { return cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionInScreen; }
-    cc::Region occlusionInTargetSurface() const { return cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionInTarget; }
+    cc::Region occlusionFromInsideTarget() const { return cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionFromInsideTarget; }
+    cc::Region occlusionFromOutsideTarget() const { return cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionFromOutsideTarget; }
 
-    void setOcclusionInScreenSpace(const cc::Region& region) { cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionInScreen = region; }
-    void setOcclusionInTargetSurface(const cc::Region& region) { cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionInTarget = region; }
+    void setOcclusionFromOutsideTarget(const cc::Region& region) { cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionFromOutsideTarget = region; }
+    void setOcclusionFromInsideTarget(const cc::Region& region) { cc::OcclusionTrackerBase<LayerType, RenderSurfaceType>::m_stack.back().occlusionFromInsideTarget = region; }
 };
 
 typedef TestOcclusionTrackerBase<cc::Layer, cc::RenderSurface> TestOcclusionTracker;