4 files changed, 12 insertions, 7 deletions
diff --git a/src/utils/mac/SkNSView.h b/src/utils/mac/SkNSView.h
index 87c2727d18..6b8989a713 100644
--- a/src/utils/mac/SkNSView.h
+++ b/src/utils/mac/SkNSView.h
@@ -42,7 +42,7 @@ class SkEvent;
 - (void)postInvalWithRect:(const SkIRect*)rectOrNil;
 - (BOOL)onHandleEvent:(const SkEvent&)event;
 
-- (void)attachGL;
+- (bool)attachGL;
 - (void)detachGL;
 - (void)presentGL;
-@end
-\ No newline at end of file
+@end
diff --git a/src/utils/mac/SkNSView.mm b/src/utils/mac/SkNSView.mm
index c498bf5f09..b520dd5f7f 100644
--- a/src/utils/mac/SkNSView.mm
+++ b/src/utils/mac/SkNSView.mm
@@ -265,9 +265,13 @@ CGLContextObj createGLContext() {
         [fGLContext setView:self];
     }
 }
-- (void)attachGL {
-    if (nil == fGLContext)
+- (bool)attachGL {
+    if (nil == fGLContext) {
         fGLContext = [[NSOpenGLContext alloc] initWithCGLContextObj:createGLContext()];
+        if (NULL == fGLContext) {
+            return false;
+        }
+    }
     
     [fGLContext makeCurrentContext];
     
@@ -275,6 +279,7 @@ CGLContextObj createGLContext() {
     glClearColor(0, 0, 0, 0);
     glClearStencil(0);
     glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+    return true;
 }
 
 - (void)detachGL {
diff --git a/src/utils/mac/SkOSWindow_Mac.mm b/src/utils/mac/SkOSWindow_Mac.mm
index def95f5bc3..7ac36d54a7 100644
--- a/src/utils/mac/SkOSWindow_Mac.mm
+++ b/src/utils/mac/SkOSWindow_Mac.mm
@@ -64,7 +64,7 @@ void SkOSWindow::onUpdateMenu(const SkOSMenu* menu) {
 }
 
 bool SkOSWindow::attachGL() {
-    [(SkNSView*)fHWND attachGL];
+    return [(SkNSView*)fHWND attachGL];
 }
 
 void SkOSWindow::detachGL() {
@@ -75,4 +75,4 @@ void SkOSWindow::presentGL() {
     [(SkNSView*)fHWND presentGL];
 }
 
-#endif
-\ No newline at end of file
+#endif
diff --git a/src/utils/mac/SkSampleNSView.h b/src/utils/mac/SkSampleNSView.h
index 6e38851efe..d3aca9a735 100644
--- a/src/utils/mac/SkSampleNSView.h
+++ b/src/utils/mac/SkSampleNSView.h
@@ -9,4 +9,4 @@
 #import "SkNSView.h"
 @interface SkSampleNSView : SkNSView
 - (id)initWithDefaults;
-@end
-\ No newline at end of file
+@end