More fixes for ios build.



git-svn-id: http://skia.googlecode.com/svn/trunk@7643 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/iOSSampleApp/SkSampleUIView.mm b/experimental/iOSSampleApp/SkSampleUIView.mm
index 12c5692..2ed5402 100644
--- a/experimental/iOSSampleApp/SkSampleUIView.mm
+++ b/experimental/iOSSampleApp/SkSampleUIView.mm
@@ -89,8 +89,8 @@
         
         SkASSERT(NULL == fCurContext);
         if (SkOSWindow::kNone_BackEndType != fBackend) {
-            fCurContext = GrContext::Create(kOpenGL_Shaders_GrEngine,
-                                            (GrPlatform3DContext) fCurIntf);
+            fCurContext = GrContext::Create(kOpenGL_GrBackend,
+                                            (GrBackendContext) fCurIntf);
         }
         
         if ((NULL == fCurContext || NULL == fCurIntf) &&