Revert of Revert of Add compressed texture capabilities for GPU devices

src/gpu/gl/GrGLCaps.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLCaps_DEFINED
 #define GrGLCaps_DEFINED
@@ skipping 295 matching lines @@
             int bitIdx = config % 32;
             return SkToBool(fVerifiedColorConfigs[u32Idx] & (1 << bitIdx));
         }
     };
 
     void initFSAASupport(const GrGLContextInfo&, const GrGLInterface*);
     void initStencilFormats(const GrGLContextInfo&);
     // This must be called after initFSAASupport().
     void initConfigRenderableTable(const GrGLContextInfo&);
 
+    void initCompressedTextureSupport(const GrGLContextInfo &);
+
     // tracks configs that have been verified to pass the FBO completeness when
     // used as a color attachment
     VerifiedColorConfigs fVerifiedColorConfigs;
 
     SkTArray<StencilFormat, true> fStencilFormats;
     // tracks configs that have been verified to pass the FBO completeness when
     // used as a color attachment when a particular stencil format is used
     // as a stencil attachment.
     SkTArray<VerifiedColorConfigs, true> fStencilVerifiedColorConfigs;
 
@@ skipping 24 matching lines @@
     bool fVertexArrayObjectSupport : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
     bool fIsCoreProfile : 1;
     bool fFullClearIsFree : 1;
     bool fDropsTileOnZeroDivide : 1;
 
     typedef GrDrawTargetCaps INHERITED;
 };
 
 #endif