Support using OpenGL ES context on desktop

src/gpu/gl/angle/SkANGLEGLContext.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 "gl/SkANGLEGLContext.h"
 
@@ skipping 34 matching lines @@
         if (fSurface) {
             eglDestroySurface(fDisplay, fSurface);
             fSurface = EGL_NO_SURFACE;
         }
 
         //TODO should we close the display?
         fDisplay = EGL_NO_DISPLAY;
     }
 }
 
-const GrGLInterface* SkANGLEGLContext::createGLContext() {
+const GrGLInterface* SkANGLEGLContext::createGLContext(GrGLStandard forcedGpuAPI) {
+    if (kGL_GrGLStandard == forcedGpuAPI) {
+        return NULL;
+    }
 
     fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
 
     EGLint majorVersion;
     EGLint minorVersion;
     eglInitialize(fDisplay, &majorVersion, &minorVersion);
 
     EGLint numConfigs;
     static const EGLint configAttribs[] = {
         EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
@@ skipping 38 matching lines @@
     if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
         SkDebugf("Could not set the context.\n");
     }
 }
 
 void SkANGLEGLContext::swapBuffers() const {
     if (!eglSwapBuffers(fDisplay, fSurface)) {
         SkDebugf("Could not complete eglSwapBuffers.\n");
     }
 }