Support using OpenGL ES context on desktop

tools/PictureRenderer.h

Index: tools/PictureRenderer.h
diff --git a/tools/PictureRenderer.h b/tools/PictureRenderer.h
index efe118ff08f48701e53c89c19c6f9fdca01bd607..b4e08aafeba704d362da6523de107cc2e8040649 100644
--- a/tools/PictureRenderer.h
+++ b/tools/PictureRenderer.h
@@ -165,7 +165,11 @@ public:
     /**
      * Set the backend type. Returns true on success and false on failure.
      */
+#if SK_SUPPORT_GPU
+    bool setDeviceType(SkDeviceTypes deviceType, GrGLStandard gpuAPI = kNone_GrGLStandard) {
+#else
     bool setDeviceType(SkDeviceTypes deviceType) {
+#endif
         fDeviceType = deviceType;
 #if SK_SUPPORT_GPU
         // In case this function is called more than once
@@ -200,7 +204,7 @@ public:
                 return false;
         }
 #if SK_SUPPORT_GPU
-        fGrContext = fGrContextFactory.get(glContextType);
+        fGrContext = fGrContextFactory.get(glContextType, gpuAPI);
         if (NULL == fGrContext) {
             return false;
         } else {