CoreAnimation: Fix download shelf pattern phase

chrome/browser/ui/cocoa/download/download_shelf_view.mm

 // Copyright (c) 2012 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/download/download_shelf_view.h"
 
 #include "chrome/browser/themes/theme_properties.h"
 #include "chrome/browser/themes/theme_service.h"
 #import "chrome/browser/ui/cocoa/nsview_additions.h"
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_controller.h"
@@ skipping 31 matching lines @@
 }
 
 - (void)drawRect:(NSRect)rect {
   gfx::ScopedNSGraphicsContextSaveGState saveGState;
 
   // We want our backgrounds for the shelf to be phased from the upper
   // left hand corner of the view. Offset it by tab height so that the
   // background matches the toolbar background.
   NSPoint phase = NSMakePoint(
       0, NSHeight([self bounds]) + [TabStripController defaultTabHeight]);
-  [[NSGraphicsContext currentContext] cr_setPatternPhase:phase forView:self];
+  [[NSGraphicsContext currentContext]
+      cr_setPatternPhase:phase forView:[self cr_viewBeingDrawnTo]];
   [self drawBackgroundWithOpaque:YES];
 
   // Draw top stroke
   [[self strokeColor] set];
   NSRect borderRect, contentRect;
   NSDivideRect([self bounds], &borderRect, &contentRect, [self cr_lineWidth],
                NSMaxYEdge);
   NSRectFillUsingOperation(borderRect, NSCompositeSourceOver);
 
   // Draw the top highlight
@@ skipping 19 matching lines @@
 
 - (ViewID)viewID {
   return VIEW_ID_DOWNLOAD_SHELF;
 }
 
 - (BOOL)isOpaque {
   return YES;
 }
 
 @end