Draw the image at the origin rather than one pixel to the right....

skia/ext/skia_utils_mac.mm

 // Copyright (c) 2006-2008 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.
 
 #include "skia/ext/skia_utils_mac.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/scoped_cftyperef.h"
@@ skipping 81 matching lines @@
 
   scoped_ptr<skia::BitmapPlatformDevice> device(
       skia::BitmapPlatformDevice::Create(NULL, width, height, false));
 
   CGContextRef context = device->GetBitmapContext();
 
   // We need to invert the y-axis of the canvas so that Core Graphics drawing
   // happens right-side up. Skia has an upper-left origin and CG has a lower-
   // left one.
   CGContextScaleCTM(context, 1.0, -1.0);
-  CGContextTranslateCTM(context, 1, -height);
+  CGContextTranslateCTM(context, 0, -height);
 
   // We want to copy transparent pixels from |image|, instead of blending it
   // onto uninitialized pixels.
   CGContextSetBlendMode(context, kCGBlendModeCopy);
 
   CGRect rect = CGRectMake(0, 0, width, height);
   CGContextDrawImage(context, rect, image);
 
   // Because |device| will be cleaned up and will take its pixels with it, we
   // copy it to the stack and return it.
@@ skipping 61 matching lines @@
   // Now convert to NSImage.
   NSBitmapImageRep* bitmap = [[[NSBitmapImageRep alloc]
                                    initWithCGImage:cgimage] autorelease];
   CFRelease(cgimage);
   NSImage* image = [[[NSImage alloc] init] autorelease];
   [image addRepresentation:bitmap];
   return image;
 }
 
 }  // namespace gfx