Remove unnecessary zoom argument from GetImage() as its value is always available through the Layou…

third_party/WebKit/Source/core/paint/NinePieceImagePainter.cpp

 // Copyright 2015 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 "core/paint/NinePieceImagePainter.h"
 
 #include "core/layout/ImageQualityController.h"
 #include "core/layout/LayoutBoxModelObject.h"
 #include "core/paint/BoxPainter.h"
 #include "core/paint/NinePieceImageGrid.h"
@@ skipping 45 matching lines @@
   IntSize image_size = RoundedIntSize(
       style_image->ImageSize(layout_object_, 1, border_image_rect.Size()));
 
   IntRectOutsets border_widths(style.BorderTopWidth(), style.BorderRightWidth(),
                                style.BorderBottomWidth(),
                                style.BorderLeftWidth());
   NinePieceImageGrid grid(nine_piece_image, image_size,
                           PixelSnappedIntRect(border_image_rect),
                           border_widths);
 
-  RefPtr<Image> image =
-      style_image->GetImage(layout_object_, image_size, style.EffectiveZoom());
+  RefPtr<Image> image = style_image->GetImage(layout_object_, image_size);
 
   InterpolationQuality interpolation_quality =
       BoxPainter::ChooseInterpolationQuality(layout_object_, image.Get(), 0,
                                              rect_with_outsets.Size());
   InterpolationQuality previous_interpolation_quality =
       graphics_context.ImageInterpolationQuality();
   graphics_context.SetImageInterpolationQuality(interpolation_quality);
 
   TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "PaintImage",
                "data",
@@ skipping 14 matching lines @@
                                         draw_info.tile_rule.vertical, op);
       }
     }
   }
 
   graphics_context.SetImageInterpolationQuality(previous_interpolation_quality);
   return true;
 }
 
 }  // namespace blink