More cleanup around GrContext, textures, and SkGr.cpp

include/gpu/GrContext.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContext_DEFINED
 #define GrContext_DEFINED
 
@@ skipping 256 matching lines @@
      * tiling non-power-of-two textures on APIs that don't support this (e.g.
      * unextended GLES2). NPOT scratch textures are not tilable on such APIs.
      *
      * internalFlag is a temporary workaround until changes in the internal
      * architecture are complete. Use the default value.
      */
     GrTexture* refScratchTexture(const GrSurfaceDesc&, ScratchTexMatch match,
                                  bool internalFlag = false);
 
     /**
-     * Returns true if index8 textures are supported.
+     * Can the provided configuration act as a texture?
      */
-    bool supportsIndex8PixelConfig() const;
+    bool isConfigTexturable(GrPixelConfig) const;
+
+    /**
+     * Can non-power-of-two textures be used with tile modes other than clamp?
+     */
+    bool npotTextureTileSupport() const;
 
     /**
      *  Return the max width or height of a texture supported by the current GPU.
      */
     int getMaxTextureSize() const;
 
     /**
      *  Temporarily override the true max texture size. Note: an override
      *  larger then the true max texture size will have no effect.
      *  This entry point is mainly meant for testing texture size dependent
@@ skipping 560 matching lines @@
     /**
      *  This callback allows the resource cache to callback into the GrContext
      *  when the cache is still over budget after a purge.
      */
     static void OverBudgetCB(void* data);
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif