Allow CanvasSkia to bind to an existing SkCanvas.

views/controls/menu/menu_item_view_win.cc

Index: views/controls/menu/menu_item_view_win.cc
diff --git a/views/controls/menu/menu_item_view_win.cc b/views/controls/menu/menu_item_view_win.cc
index cea5c4c7cb06dfd2a7782a235f25a4c38f9b9f27..9e04cdc5125625c9c7a1fd31c761d665ef3ef5b9 100644
--- a/views/controls/menu/menu_item_view_win.cc
+++ b/views/controls/menu/menu_item_view_win.cc
@@ -66,7 +66,7 @@ void MenuItemView::PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) {
                             height());
     AdjustBoundsForRTLUI(&gutter_bounds);
     NativeTheme::ExtraParams extra;
-    NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
+    NativeTheme::instance()->Paint(canvas->GetSkCanvas(),
                                    NativeTheme::kMenuPopupGutter,
                                    NativeTheme::kNormal,
                                    gutter_bounds,
@@ -79,7 +79,7 @@ void MenuItemView::PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) {
     NativeTheme::ExtraParams extra;
     extra.menu_item.is_selected = render_selection;
     AdjustBoundsForRTLUI(&item_bounds);
-    NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
+    NativeTheme::instance()->Paint(canvas->GetSkCanvas(),
         NativeTheme::kMenuItemBackground, control_state, item_bounds, extra);
   }
 
@@ -144,7 +144,7 @@ void MenuItemView::PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) {
     gfx::NativeTheme::ExtraParams extra;
     extra.menu_arrow.pointing_right = !base::i18n::IsRTL();
     extra.menu_arrow.is_selected = render_selection;
-    gfx::NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
+    gfx::NativeTheme::instance()->Paint(canvas->GetSkCanvas(),
         gfx::NativeTheme::kMenuPopupArrow, control_state, arrow_bounds, extra);
   }
 }
@@ -174,13 +174,13 @@ void MenuItemView::PaintCheck(gfx::Canvas* canvas,
   // Draw the background.
   gfx::Rect bg_bounds(0, 0, icon_x + icon_width, height());
   AdjustBoundsForRTLUI(&bg_bounds);
-  NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
+  NativeTheme::instance()->Paint(canvas->GetSkCanvas(),
       NativeTheme::kMenuCheckBackground, state, bg_bounds, extra);
 
   // And the check.
   gfx::Rect icon_bounds(icon_x / 2, icon_y, icon_width, icon_height);
   AdjustBoundsForRTLUI(&icon_bounds);
-  NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
+  NativeTheme::instance()->Paint(canvas->GetSkCanvas(),
       NativeTheme::kMenuCheck, state, bg_bounds, extra);
 }