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

samplecode/SampleLitAtlas.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 "SampleCode.h"
 #include "SkAnimTimer.h"
 #include "SkBitmapProcShader.h"
@@ skipping 166 matching lines @@
         kLast_ObjType = kShip_ObjType
     };
 
     static const int kObjTypeCount = kLast_ObjType + 1;
 
     void updateLights() {        
         SkLights::Builder builder;
 
         builder.add(SkLights::Light::MakeDirectional(
                 SkColor3f::Make(1.0f, 1.0f, 1.0f), fLightDir));
-        builder.setAmbientLightColor(SkColor3f::Make(0.2f, 0.2f, 0.2f));
+        builder.add(SkLights::Light::MakeAmbient(SkColor3f::Make(0.2f, 0.2f, 0.2f)));
 
         fLights = builder.finish();
     }
 
 #ifdef SK_DEBUG
     // Draw a vector to the light
     void drawLightDir(SkCanvas* canvas, SkScalar centerX, SkScalar centerY) {
         static const int kBgLen = 30;
         static const int kSmLen = 5;
 
@@ skipping 310 matching lines @@
 private:
     SkAutoTUnref<DrawLitAtlasDrawable> fDrawable;
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new DrawLitAtlasView; }
 static SkViewRegister reg(MyFactory);