Revert of Support using OpenGL ES context on desktop

src/gpu/gl/iOS/SkNativeGLContext_iOS.mm

Index: src/gpu/gl/iOS/SkNativeGLContext_iOS.mm
diff --git a/src/gpu/gl/iOS/SkNativeGLContext_iOS.mm b/src/gpu/gl/iOS/SkNativeGLContext_iOS.mm
index 1e11c0deb7be8afd32fdbf83314f6b9b6d4717c0..a276fd05da697085a2e353d2166e3ecb78850ffe 100644
--- a/src/gpu/gl/iOS/SkNativeGLContext_iOS.mm
+++ b/src/gpu/gl/iOS/SkNativeGLContext_iOS.mm
@@ -42,11 +42,7 @@
     [EAGLCTX release];
 }
 
-const GrGLInterface* SkNativeGLContext::createGLContext(GrGLStandard forcedGpuAPI) {
-    if (kGL_GrGLStandard == forcedGpuAPI) {
-        return NULL;
-    }
-
+const GrGLInterface* SkNativeGLContext::createGLContext() {
     fEAGLContext = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
     [EAGLContext setCurrentContext:EAGLCTX];
     
@@ -65,4 +61,4 @@
     }
 }
 
-void SkNativeGLContext::swapBuffers() const { }
+void SkNativeGLContext::swapBuffers() const { }