Remove deprecated usage of SkNEW and SkDELETE

src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm

Index: src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
diff --git a/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm b/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
index 08e6f239eed1c25546bfb022df59a7208b66cf16..b90948af442167944f223a6ef748dc8ed28c952e 100644
--- a/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
+++ b/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
@@ -93,11 +93,10 @@ SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI) {
     if (kGL_GrGLStandard == forcedGpuAPI) {
         return NULL;
     }
-    IOSGLContext* ctx = SkNEW(IOSGLContext);
+    IOSGLContext* ctx = new IOSGLContext;
     if (!ctx->isValid()) {
-        SkDELETE(ctx);
+        delete ctx;
         return NULL;
     }
     return ctx;
 }
-