Fix Chrome-Skia build on Mac (catch up with http://trac.webkit.org/changeset/102044)

BUG=106842
Review URL: http://codereview.chromium.org/8888014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@113621 0039d316-1c4b-4281-b951-d872f2087c98

chrome/renderer/print_web_view_helper_mac.mm

@@ -19,7 +19,7 @@
 #include "printing/metafile_skia_wrapper.h"
 #include "skia/ext/platform_device.h"
 #include "skia/ext/vector_canvas.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebCanvas.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebCanvas.h"
 #endif
 
 using WebKit::WebFrame;