cc: Stop using drawableContentRect for occlusion.

cc/tiled_layer_unittest.cc

Index: cc/tiled_layer_unittest.cc
diff --git a/cc/tiled_layer_unittest.cc b/cc/tiled_layer_unittest.cc
index b06551e8da18003cb92ebaef69fdb52ebca1c743..16740a1b8fe63da1832ccafcb856b8533a9ff8ef 100644
--- a/cc/tiled_layer_unittest.cc
+++ b/cc/tiled_layer_unittest.cc
@@ -29,7 +29,6 @@ class TestOcclusionTracker : public OcclusionTracker {
 public:
     TestOcclusionTracker()
         : OcclusionTracker(gfx::Rect(0, 0, 1000, 1000), true)
-        , m_layerClipRectInTarget(gfx::Rect(0, 0, 1000, 1000))
     {
         m_stack.push_back(StackObject());
     }
@@ -39,13 +38,10 @@ public:
         m_stack.back().target = renderTarget;
     }
 
-    void setOcclusion(const Region& occlusion) { m_stack.back().occlusionFromInsideTarget = occlusion; }
-
-protected:
-    virtual gfx::Rect layerClipRectInTarget(const Layer* layer) const OVERRIDE { return m_layerClipRectInTarget; }
-
-private:
-    gfx::Rect m_layerClipRectInTarget;
+    void setOcclusion(const Region& occlusion)
+    {
+        m_stack.back().occlusionFromInsideTarget = occlusion;
+    }
 };
 
 class TiledLayerTest : public testing::Test {