nibless mac, visual bench working on mac

src/views/mac/SkNSView.mm

Index: src/views/mac/SkNSView.mm
diff --git a/src/views/mac/SkNSView.mm b/src/views/mac/SkNSView.mm
index 7ca23f40e523fb98096abb2c3ad502b38239182d..e9e486a2085b5835b2e8610d678c731a295d474b 100644
--- a/src/views/mac/SkNSView.mm
+++ b/src/views/mac/SkNSView.mm
@@ -329,8 +329,7 @@ static unsigned convertNSModifiersToSk(NSUInteger nsModi) {
 ///////////////////////////////////////////////////////////////////////////////
 #include <OpenGL/OpenGL.h>
 
-namespace { 
-CGLContextObj createGLContext(int msaaSampleCount) {
+static CGLContextObj createGLContext(int msaaSampleCount) {
     GLint major, minor;
     CGLGetVersion(&major, &minor);
     
@@ -369,7 +368,6 @@ CGLContextObj createGLContext(int msaaSampleCount) {
     CGLSetCurrentContext(ctx);
     return ctx;
 }
-}
 
 - (void)viewDidMoveToWindow {
     [super viewDidMoveToWindow];
@@ -420,4 +418,12 @@ CGLContextObj createGLContext(int msaaSampleCount) {
         [fGLContext flushBuffer];
     }
 }
+
+- (void)setVSync:(bool)enable {
+    if (fGLContext) {
+        GLint interval = enable ? 1 : 0;
+        CGLContextObj ctx = (CGLContextObj)[fGLContext CGLContextObj];
+        CGLSetParameter(ctx, kCGLCPSwapInterval, &interval);
+    }
+}
 @end