Add getColorSpace to GrTextureProducer

src/gpu/GrTextureParamsAdjuster.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTextureMaker_DEFINED
 #define GrTextureMaker_DEFINED
 
@@ skipping 90 matching lines @@
     */
     virtual void makeCopyKey(const CopyParams&, GrUniqueKey* copyKey) = 0;
 
     /**
     *  If a stretched version of the texture is generated, it may be cached (assuming that
     *  makeCopyKey() returns true). In that case, the maker is notified in case it
     *  wants to note that for when the maker is destroyed.
     */
     virtual void didCacheCopy(const GrUniqueKey& copyKey) = 0;
 
+    virtual SkColorSpace* getColorSpace() = 0;
+
 private:
     const int   fWidth;
     const int   fHeight;
     const bool  fIsAlphaOnly;
 
     typedef SkNoncopyable INHERITED;
 };
 
 /**
  * Base class for sources that start out as textures. Optionally allows for a content area subrect.
@@ skipping 85 matching lines @@
 
     GrContext* context() const { return fContext; }
 
 private:
     GrContext*  fContext;
 
     typedef GrTextureProducer INHERITED;
 };
 
 #endif