Allow CanvasSkia to bind to an existing SkCanvas.

ui/gfx/compositor/layer_unittest.cc

Index: ui/gfx/compositor/layer_unittest.cc
diff --git a/ui/gfx/compositor/layer_unittest.cc b/ui/gfx/compositor/layer_unittest.cc
index 0f14c9dde463c58975f8884a7810953326246aa9..43ef6cde05b1b2350b3064c5e2e470718977aa31 100644
--- a/ui/gfx/compositor/layer_unittest.cc
+++ b/ui/gfx/compositor/layer_unittest.cc
@@ -69,7 +69,7 @@ class LayerWithRealCompositorTest : public testing::Test {
     scoped_ptr<gfx::Canvas> canvas(CreateCanvasForLayer(layer));
     canvas->FillRectInt(color, 0, 0, layer->bounds().width(),
                         layer->bounds().height());
-    layer->SetCanvas(*canvas->AsCanvasSkia(), layer->bounds().origin());
+    layer->SetCanvas(*canvas->GetSkCanvas(), layer->bounds().origin());
   }
 
   void DrawTree(Layer* root) {
@@ -236,7 +236,7 @@ class LayerWithDelegateTest : public testing::Test {
     scoped_ptr<gfx::Canvas> canvas(CreateCanvasForLayer(layer));
     canvas->FillRectInt(color, 0, 0, layer->bounds().width(),
                         layer->bounds().height());
-    layer->SetCanvas(*canvas->AsCanvasSkia(), layer->bounds().origin());
+    layer->SetCanvas(canvas->GetSkCanvas(), layer->bounds().origin());
   }
 
   void DrawTree(Layer* root) {