Support using OpenGL ES context on desktop

dm/DMGpuSupport.h

Index: dm/DMGpuSupport.h
diff --git a/dm/DMGpuSupport.h b/dm/DMGpuSupport.h
index 46896b43217f91b623a494b55f437dfa510d03bf..298468509cf4113832ecf228045f12a20bed86c3 100644
--- a/dm/DMGpuSupport.h
+++ b/dm/DMGpuSupport.h
@@ -19,9 +19,10 @@ static const bool kGPUDisabled = false;
 
 static inline SkSurface* NewGpuSurface(GrContextFactory* grFactory,
                                        GrContextFactory::GLContextType type,
+                                       GrGLStandard api,
                                        SkImageInfo info,
                                        int samples) {
-    return SkSurface::NewRenderTarget(grFactory->get(type), info, samples);
+    return SkSurface::NewRenderTarget(grFactory->get(type, api), info, samples);
 }
 
 }  // namespace DM
@@ -30,6 +31,12 @@ static inline SkSurface* NewGpuSurface(GrContextFactory* grFactory,
 
 // Ganesh is not available.  Fake it.
 
+enum GrGLStandard {
+    kNone_GrGLStandard,
+    kGL_GrGLStandard,
+    kGLES_GrGLStandard
+};
+
 class GrContextFactory {
 public:
     typedef int GLContextType;
@@ -48,6 +55,7 @@ static const bool kGPUDisabled = true;
 
 static inline SkSurface* NewGpuSurface(GrContextFactory*,
                                        GrContextFactory::GLContextType,
+                                       GrGLStandard,
                                        SkImageInfo,
                                        int) {
     return NULL;