Add SkSourceGammaTreatment enum so we know how to create mips

src/core/SkImageCacherator.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBitmapCache.h"
 #include "SkImage_Base.h"
@@ skipping 231 matching lines @@
  *  We have a 5 ways to try to return a texture (in sorted order)
  *
  *  1. Check the cache for a pre-existing one
  *  2. Ask the generator to natively create one
  *  3. Ask the generator to return a compressed form that the GPU might support
  *  4. Ask the generator to return YUV planes, which the GPU can convert
  *  5. Ask the generator to return RGB(A) data, which the GPU can convert
  */
 GrTexture* SkImageCacherator::lockTexture(GrContext* ctx, const GrUniqueKey& key,
                                           const SkImage* client, SkImage::CachingHint chint,
-                                          bool willBeMipped) {
+                                          bool willBeMipped,
+                                          SkSourceGammaTreatment gammaTreatment) {
     // Values representing the various texture lock paths we can take. Used for logging the path
     // taken to a histogram.
     enum LockTexturePath {
         kFailure_LockTexturePath,
         kPreExisting_LockTexturePath,
         kNative_LockTexturePath,
         kCompressed_LockTexturePath,
         kYUV_LockTexturePath,
         kRGBA_LockTexturePath,
     };
@@ skipping 45 matching lines @@
                                      kLockTexturePathCount);
             return set_key_and_return(tex.release(), key);
         }
     }
 
     // 5. Ask the generator to return RGB(A) data, which the GPU can convert
     SkBitmap bitmap;
     if (this->tryLockAsBitmap(&bitmap, client, chint)) {
         GrTexture* tex = nullptr;
         if (willBeMipped) {
-            tex = GrGenerateMipMapsAndUploadToTexture(ctx, bitmap);
+            tex = GrGenerateMipMapsAndUploadToTexture(ctx, bitmap, gammaTreatment);
         }
         if (!tex) {
             tex = GrUploadBitmapToTexture(ctx, bitmap);
         }
         if (tex) {
             SK_HISTOGRAM_ENUMERATION("LockTexturePath", kRGBA_LockTexturePath,
                                      kLockTexturePathCount);
             return set_key_and_return(tex, key);
         }
     }
     SK_HISTOGRAM_ENUMERATION("LockTexturePath", kFailure_LockTexturePath,
                              kLockTexturePathCount);
     return nullptr;
 }
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 GrTexture* SkImageCacherator::lockAsTexture(GrContext* ctx, const GrTextureParams& params,
+                                            SkSourceGammaTreatment gammaTreatment,
                                             const SkImage* client, SkImage::CachingHint chint) {
     if (!ctx) {
         return nullptr;
     }
 
-    return GrImageTextureMaker(ctx, this, client, chint).refTextureForParams(params);
+    return GrImageTextureMaker(ctx, this, client, chint).refTextureForParams(params,
+                                                                             gammaTreatment);
 }
 
 #else
 
 GrTexture* SkImageCacherator::lockAsTexture(GrContext* ctx, const GrTextureParams&,
+                                            SkSourceGammaTreatment gammaTreatment,
                                             const SkImage* client, SkImage::CachingHint) {
     return nullptr;
 }
 
 #endif