skia: add ability to load command_buffer_gles2

tools/PictureRenderer.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "PictureRenderer.h"
 #include "picture_utils.h"
 #include "SamplePipeControllers.h"
@@ skipping 121 matching lines @@
             SkBitmap bitmap;
             sk_tools::setup_bitmap(&bitmap, width, height);
             canvas.reset(new SkCanvas(bitmap));
         }
         break;
 #if SK_SUPPORT_GPU
 #if SK_ANGLE
         case kAngle_DeviceType:
             // fall through
 #endif
+#if SK_COMMAND_BUFFER
+        case kCommandBuffer_DeviceType:
+            // fall through
+#endif
 #if SK_MESA
         case kMesa_DeviceType:
             // fall through
 #endif
         case kGPU_DeviceType:
         case kNVPR_DeviceType: {
             SkAutoTUnref<GrSurface> target;
             if (fGrContext) {
                 // create a render target to back the device
                 GrSurfaceDesc desc;
@@ skipping 669 matching lines @@
         case kNone_BBoxHierarchyType:
             return nullptr;
         case kRTree_BBoxHierarchyType:
             return new SkRTreeFactory;
     }
     SkASSERT(0); // invalid bbhType
     return nullptr;
 }
 
 } // namespace sk_tools