Revert of Moved ambient lights out of SkLight's light array

gm/shadowmaps.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gm.h"
 #include "SkPathEffect.h"
@@ skipping 56 matching lines @@
         // Create a light set consisting of
         //   - bluish directional light pointing more right than down
         //   - reddish directional light pointing more down than right
         //   - soft white ambient light
 
         SkLights::Builder builder;
         builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(0.2f, 0.3f, 0.4f),
                                                      SkVector3::Make(0.2f, 0.1f, 1.0f)));
         builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(0.4f, 0.3f, 0.2f),
                                                      SkVector3::Make(0.1f, 0.2f, 1.0f)));
-        builder.setAmbientLightColor(SkColor3f::Make(0.4f, 0.4f, 0.4f));
+        builder.add(SkLights::Light::MakeAmbient(SkColor3f::Make(0.4f, 0.4f, 0.4f)));
         fLights = builder.finish();
 
         fShadowParams.fShadowRadius = 4.0f;
         fShadowParams.fBiasingConstant = 0.3f;
         fShadowParams.fMinVariance = 1024;
         fShadowParams.fType = SkShadowParams::kVariance_ShadowType;
     }
 
 protected:
     static const int kWidth = 400;
@@ skipping 20 matching lines @@
     SkShadowParams fShadowParams;
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new ShadowMapsGM;)
 }
 
 #endif