Moved ambient lights out of SkLight's light array

samplecode/SampleLighting.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DecodeFile.h"
 #include "SampleCode.h"
 #include "Resources.h"
 #include "SkCanvas.h"
 #include "SkLightingShader.h"
 #include "SkNormalSource.h"
 #include "SkPoint3.h"
 
 static sk_sp<SkLights> create_lights(SkScalar angle, SkScalar blue) {
 
     const SkVector3 dir = SkVector3::Make(SkScalarSin(angle)*SkScalarSin(SK_ScalarPI*0.25f),
                                           SkScalarCos(angle)*SkScalarSin(SK_ScalarPI*0.25f),
                                           SkScalarCos(SK_ScalarPI*0.25f));
 
     SkLights::Builder builder;
 
     builder.add(SkLights::Light::MakeDirectional(SkColor3f::Make(1.0f, 1.0f, blue), dir));
-    builder.add(SkLights::Light::MakeAmbient(SkColor3f::Make(0.1f, 0.1f, 0.1f)));
+    builder.setAmbientLightColor(SkColor3f::Make(0.1f, 0.1f, 0.1f));
 
     return builder.finish();
 }
 
 ////////////////////////////////////////////////////////////////////////////
 
 class LightingView : public SampleView {
 public:
     SkBitmap        fDiffuseBitmap;
     SkBitmap        fNormalBitmap;
@@ skipping 53 matching lines @@
     }
 
 private:
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new LightingView; }
 static SkViewRegister reg(MyFactory);