Make use of new SkLights class

gm/lightingshader.cpp

Index: gm/lightingshader.cpp
diff --git a/gm/lightingshader.cpp b/gm/lightingshader.cpp
index 54f698a75323cbf2abbd2fb989d15ef97f1f90fb..ae6a24f9f0c3ce895aeae048f022c53ce0504daf 100644
--- a/gm/lightingshader.cpp
+++ b/gm/lightingshader.cpp
@@ -46,13 +46,13 @@ public:
     LightingShaderGM() {
         this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
 
-        SkLightingShader::Lights::Builder builder;
+        SkLights::Builder builder;
 
-        builder.add(SkLight(SkColor3f::Make(1.0f, 1.0f, 1.0f),
-                            SkVector3::Make(1.0f, 0.0f, 0.0f)));
-        builder.add(SkLight(SkColor3f::Make(0.2f, 0.2f, 0.2f)));
+        builder.add(SkLights::Light(SkColor3f::Make(1.0f, 1.0f, 1.0f),
+                                    SkVector3::Make(1.0f, 0.0f, 0.0f)));
+        builder.add(SkLights::Light(SkColor3f::Make(0.2f, 0.2f, 0.2f)));
 
-        fLights.reset(builder.finish());
+        fLights = builder.finish();
     }
 
 protected:
@@ -162,10 +162,10 @@ private:
     static const int kTexSize = 128;
     static const int kGMSize  = 512;
 
-    SkBitmap                fDiffuse;
-    SkBitmap                fNormalMaps[kNormalMapCount];
+    SkBitmap        fDiffuse;
+    SkBitmap        fNormalMaps[kNormalMapCount];
 
-    SkAutoTUnref<const SkLightingShader::Lights>  fLights;
+    sk_sp<SkLights> fLights;
 
     typedef GM INHERITED;
 };