Add support for vertex and geometry shader textures

tests/EGLImageTest.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 "Test.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
@@ skipping 69 matching lines @@
 }
 
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(EGLImageTest, reporter, context0, glCtx0) {
     // Try to create a second GL context and then check if the contexts have necessary
     // extensions to run this test.
 
     if (kGLES_GrGLStandard != glCtx0->gl()->fStandard) {
         return;
     }
     GrGLGpu* gpu0 = static_cast<GrGLGpu*>(context0->getGpu());
-    if (!gpu0->glCaps().externalTextureSupport()) {
+    if (!gpu0->glCaps().glslCaps()->externalTextureSupport()) {
         return;
     }
 
     SkAutoTDelete<SkGLContext> glCtx1 = glCtx0->createNew();
     if (!glCtx1) {
         return;
     }
     GrContext* context1 = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)glCtx1->gl());
     const GrGLTextureInfo* backendTexture1 = nullptr;
     GrEGLImage image = GR_EGL_NO_IMAGE;
@@ skipping 96 matching lines @@
     test_read_pixels(reporter, context0, externalTextureObj, pixels.get());
 
     test_write_pixels(reporter, context0, externalTextureObj);
 
     test_copy_surface(reporter, context0, externalTextureObj, pixels.get());
 
     cleanup(glCtx0, externalTexture.fID, glCtx1, context1, backendTexture1, image);
 }
 
 #endif