Always call the class methods to save/restore contexts.

chrome/browser/ui/cocoa/find_bar/find_bar_view.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/find_bar/find_bar_view.h"
 
 #import "chrome/browser/ui/cocoa/nsview_additions.h"
 #import "chrome/browser/ui/cocoa/themed_window.h"
 #import "chrome/browser/ui/cocoa/url_drop_target.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
@@ skipping 46 matching lines @@
   [path lineToPoint:bottomRight];
   [path curveToPoint:midRight1
         controlPoint1:NSMakePoint(midRight1.x, bottomLeft.y)
         controlPoint2:NSMakePoint(midRight1.x, bottomLeft.y)];
   [path lineToPoint:midRight2];
   [path curveToPoint:topRight
         controlPoint1:NSMakePoint(midRight2.x, topLeft.y)
         controlPoint2:NSMakePoint(midRight2.x, topLeft.y)];
 
   {
+    gfx::ScopedNSGraphicsContextSaveGState scopedGState;
     NSGraphicsContext* context = [NSGraphicsContext currentContext];
-    gfx::ScopedNSGraphicsContextSaveGState scopedGState(context);
     [path addClip];
 
     // Set the pattern phase
     NSPoint phase = [[self window] themePatternPhase];
 
     [context setPatternPhase:phase];
     [super drawBackgroundWithOpaque:YES];
   }
 
   [[self strokeColor] set];
@@ skipping 57 matching lines @@
   return VIEW_ID_FIND_IN_PAGE;
 }
 
 // Specifies that mouse events over this view should be ignored by the
 // render host.
 - (BOOL)nonWebContentView {
   return YES;
 }
 
 @end