Fix GL attach/detach in Mac SampleApp

Review URL: http://codereview.appspot.com/5984043/


git-svn-id: http://skia.googlecode.com/svn/trunk@3587 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/views/unix/SkOSWindow_Unix.cpp b/src/views/unix/SkOSWindow_Unix.cpp
index 01bc21c..674ea62 100644
--- a/src/views/unix/SkOSWindow_Unix.cpp
+++ b/src/views/unix/SkOSWindow_Unix.cpp
@@ -170,7 +170,7 @@
 
 }
 
-bool SkOSWindow::attach(SkBackEndTypes /* attachType */)
+bool SkOSWindow::attach(SkBackEndTypes /* attachType */, int msaaSampleCount)
 {
     if (fGLAttached) return true;
     Display* dsp = fUnixWindow.fDisplay;