Remove duplicate typedef

components/printing/renderer/print_web_view_helper_mac.mm

Index: components/printing/renderer/print_web_view_helper_mac.mm
diff --git a/components/printing/renderer/print_web_view_helper_mac.mm b/components/printing/renderer/print_web_view_helper_mac.mm
index e94f21e54a9edce843519b7f011d30f1a4d20c27..08a1c10b371bdcfddad83e0a9ffcc4d86fe457c1 100644
--- a/components/printing/renderer/print_web_view_helper_mac.mm
+++ b/components/printing/renderer/print_web_view_helper_mac.mm
@@ -12,9 +12,9 @@
 #include "components/printing/common/print_messages.h"
 #include "printing/metafile_skia_wrapper.h"
 #include "printing/page_size_margins.h"
-#include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/WebCanvas.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
+#include "third_party/skia/include/core/SkCanvas.h"
 
 namespace printing {
 
@@ -138,7 +138,7 @@ void PrintWebViewHelper::RenderPage(const PrintMsg_Print_Params& params,
       params.display_header_footer ? gfx::Rect(*page_size) : content_area;
 
   {
-    skia::PlatformCanvas* canvas = metafile->GetVectorCanvasForNewPage(
+    SkCanvas* canvas = metafile->GetVectorCanvasForNewPage(
         *page_size, canvas_area, scale_factor);
     if (!canvas)
       return;