Add missing F16 case to reverse pixel config conversion

src/gpu/SkGr.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkGr.h"
 #include "SkGrPriv.h"
@@ skipping 449 matching lines @@
             ct = kBGRA_8888_SkColorType;
             break;
         case kSRGBA_8888_GrPixelConfig:
             ct = kRGBA_8888_SkColorType;
             pt = kSRGB_SkColorProfileType;
             break;
         case kSBGRA_8888_GrPixelConfig:
             ct = kBGRA_8888_SkColorType;
             pt = kSRGB_SkColorProfileType;
             break;
+        case kRGBA_half_GrPixelConfig:
+            ct = kRGBA_F16_SkColorType;
+            break;
         default:
             return false;
     }
     if (ctOut) {
         *ctOut = ct;
     }
     if (ptOut) {
         *ptOut = pt;
     }
     return true;
@@ skipping 276 matching lines @@
             SkErrorInternals::SetError( kInvalidPaint_SkError,
                                         "Sorry, I don't understand the filtering "
                                         "mode you asked for.  Falling back to "
                                         "MIPMaps.");
             textureFilterMode = GrTextureParams::kMipMap_FilterMode;
             break;
 
     }
     return textureFilterMode;
 }