Avoid spurious errors about NSColor*-CGColor* and NSSize-CGSize conversions

chrome/browser/cocoa/download_item_cell.mm

 // Copyright (c) 2009 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/cocoa/download_item_cell.h"
 
 #include "app/gfx/canvas_paint.h"
 #include "app/gfx/text_elider.h"
 #include "app/l10n_util.h"
 #include "base/mac_util.h"
@@ skipping 464 matching lines @@
   NSBezierPath *triangle = [NSBezierPath bezierPath];
   [triangle moveToPoint:p1];
   [triangle lineToPoint:p2];
   [triangle lineToPoint:p3];
   [triangle closePath];
 
   NSGraphicsContext* context = [NSGraphicsContext currentContext];
   [context saveGraphicsState];
 
   scoped_nsobject<NSShadow> shadow([[NSShadow alloc] init]);
-  [shadow setShadowColor:[NSColor whiteColor]];
-  [shadow setShadowOffset:NSMakeSize(0, -1)];
+  [shadow.get() setShadowColor:[NSColor whiteColor]];
+  [shadow.get() setShadowOffset:NSMakeSize(0, -1)];
   [shadow setShadowBlurRadius:0.0];
   [shadow set];
 
   NSColor* fill = [self isDropdownPartPressed]
       ? [NSColor alternateSelectedControlTextColor] : themeTextColor;
   [fill setFill];
 
   [triangle fill];
 
   [context restoreGraphicsState];
@@ skipping 55 matching lines @@
   }
   return self;
 }
 
 - (void)setCurrentProgress:(NSAnimationProgress)progress {
   [super setCurrentProgress:progress];
   [cell_ animation:self progressed:progress];
 }
 
 @end