blitters for sRGB and float16

src/core/SkBitmapDevice.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapDevice.h"
 #include "SkConfig8888.h"
 #include "SkDraw.h"
@@ skipping 37 matching lines @@
     SkAlphaType canonicalAlphaType = info.alphaType();
 
     switch (info.colorType()) {
         case kAlpha_8_SkColorType:
             break;
         case kRGB_565_SkColorType:
             canonicalAlphaType = kOpaque_SkAlphaType;
             break;
         case kN32_SkColorType:
             break;
+        case kRGBA_F16_SkColorType:
+            break;
         default:
             return false;
     }
 
     if (newAlphaType) {
         *newAlphaType = canonicalAlphaType;
     }
     return true;
 }
 
@@ skipping 319 matching lines @@
         paint.getRasterizer() ||
         paint.getPathEffect() ||
         paint.isFakeBoldText() ||
         paint.getStyle() != SkPaint::kFill_Style ||
         !SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode))
     {
         return true;
     }
     return false;
 }