mac: Move bookmark hierarchy arrow from a pdf to a png.

ui/views/controls/menu/menu_image_util.cc

Index: ui/views/controls/menu/menu_image_util.cc
diff --git a/ui/views/controls/menu/menu_image_util.cc b/ui/views/controls/menu/menu_image_util.cc
index 595bfa36f0fed3bc9b6d1526cec9b637d21ba13b..34d78a6faf84dfb2e1324f308d93f603880cbd9e 100644
--- a/ui/views/controls/menu/menu_image_util.cc
+++ b/ui/views/controls/menu/menu_image_util.cc
@@ -113,7 +113,8 @@ class SubmenuArrowImageSource : public gfx::CanvasImageSource {
 
   virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-    const gfx::ImageSkia* r = rb.GetImageNamed(IDR_MENU_ARROW).ToImageSkia();
+    const gfx::ImageSkia* r =
+        rb.GetImageNamed(IDR_MENU_HIERARCHY_ARROW).ToImageSkia();
     canvas->Scale(-1, 1);
     canvas->DrawImageInt(*r, - r->width(), 0);
   }
@@ -121,7 +122,7 @@ class SubmenuArrowImageSource : public gfx::CanvasImageSource {
  private:
   static gfx::Size GetSubmenuArrowSize() {
     return ui::ResourceBundle::GetSharedInstance()
-        .GetImageNamed(IDR_MENU_ARROW).ToImageSkia()->size();
+        .GetImageNamed(IDR_MENU_HIERARCHY_ARROW).ToImageSkia()->size();
   }
 
   DISALLOW_COPY_AND_ASSIGN(SubmenuArrowImageSource);