Use ES3 texture swizzling.

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 #include "GrGLContext.h"
@@ skipping 120 matching lines @@
             fBGRAIsInternalFormat = true;
         }
         SkASSERT(fBGRAFormatSupport ||
                  kSkia8888_GrPixelConfig != kBGRA_8888_GrPixelConfig);
     }
 
     if (kDesktop_GrGLBinding == binding) {
         fTextureSwizzleSupport = version >= GR_GL_VER(3,3) ||
                                  ctxInfo.hasExtension("GL_ARB_texture_swizzle");
     } else {
-        fTextureSwizzleSupport = false;
+        fTextureSwizzleSupport = version >= GR_GL_VER(3,0);
     }
 
     if (kDesktop_GrGLBinding == binding) {
         fUnpackRowLengthSupport = true;
         fUnpackFlipYSupport = false;
         fPackRowLengthSupport = true;
         fPackFlipYSupport = false;
     } else {
         fUnpackRowLengthSupport = version >= GR_GL_VER(3,0) ||
                                   ctxInfo.hasExtension("GL_EXT_unpack_subimage");
@@ skipping 442 matching lines @@
     GrPrintf("GL_ARB_imaging support: %s\n", (fImagingSupport ? "YES": "NO"));
     GrPrintf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     GrPrintf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     GrPrintf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     GrPrintf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     GrPrintf("Core Profile: %s\n", (fIsCoreProfile ? "YES" : "NO"));
     GrPrintf("Discard FrameBuffer support: %s\n", (fDiscardFBSupport ? "YES" : "NO"));
 }