respect sRGB when converting from sk to gr configs

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"
 
@@ skipping 352 matching lines @@
     switch (ct) {
         case kUnknown_SkColorType:
             return kUnknown_GrPixelConfig;
         case kAlpha_8_SkColorType:
             return kAlpha_8_GrPixelConfig;
         case kRGB_565_SkColorType:
             return kRGB_565_GrPixelConfig;
         case kARGB_4444_SkColorType:
             return kRGBA_4444_GrPixelConfig;
         case kRGBA_8888_SkColorType:
-            //if (kSRGB_SkColorProfileType == pt) {
-            //    return kSRGBA_8888_GrPixelConfig;
-            //}
+            if (kSRGB_SkColorProfileType == pt) {
+                return kSRGBA_8888_GrPixelConfig;
+            }
             return kRGBA_8888_GrPixelConfig;
         case kBGRA_8888_SkColorType:
             return kBGRA_8888_GrPixelConfig;
         case kIndex_8_SkColorType:
             return kIndex_8_GrPixelConfig;
         case kGray_8_SkColorType:
             return kAlpha_8_GrPixelConfig; // TODO: gray8 support on gpu
         case kRGBA_F16_SkColorType:
             return kRGBA_half_GrPixelConfig;
     }
@@ skipping 310 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;
 }