Always call the class methods to save/restore contexts.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm

Index: chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
diff --git a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
index 6be1a30c5e130dc140071f68a49dbc07ce8cd0be..1d0aef89b0b0d3736ae4717f7c18fc6f85e932a4 100644
--- a/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
+++ b/chrome/browser/ui/cocoa/bookmarks/bookmark_bar_toolbar_view.mm
@@ -56,8 +56,7 @@ const CGFloat kBorderRadius = 3.0;
   if (!themeProvider)
     return;
 
-  NSGraphicsContext* context = [NSGraphicsContext currentContext];
-  gfx::ScopedNSGraphicsContextSaveGState scopedGState(context);
+  gfx::ScopedNSGraphicsContextSaveGState scopedGState;
 
   // Draw the background.
   {
@@ -103,8 +102,9 @@ const CGFloat kBorderRadius = 3.0;
 
   // Fade in/out the background.
   {
-    gfx::ScopedNSGraphicsContextSaveGState bgScopedState(context);
+    gfx::ScopedNSGraphicsContextSaveGState bgScopedState;
     [border setClip];
+    NSGraphicsContext* context = [NSGraphicsContext currentContext];
     CGContextRef cgContext = (CGContextRef)[context graphicsPort];
     CGContextBeginTransparencyLayer(cgContext, NULL);
     CGContextSetAlpha(cgContext, 1 - morph);