Remove unused Canvas::DrawStringRectWithShadows().

ui/gfx/canvas_notimplemented.cc

 // Copyright 2014 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 "ui/gfx/canvas.h"
 
 #include "base/logging.h"
 
 namespace gfx {
 
 // static
 void Canvas::SizeStringFloat(const base::string16& text,
                              const FontList& font_list,
                              float* width,
                              float* height,
                              int line_height,
                              int flags) {
   NOTIMPLEMENTED();
 }
 
 void Canvas::DrawStringRectWithHalo(const base::string16& text,
                                     const FontList& font_list,
                                     SkColor text_color,
                                     SkColor halo_color_in,
                                     const Rect& display_rect,
                                     int flags) {
   NOTIMPLEMENTED();
 }
 
-void Canvas::DrawStringRectWithShadows(const base::string16& text,
-                                       const FontList& font_list,
-                                       SkColor color,
-                                       const Rect& text_bounds,
-                                       int line_height,
-                                       int flags,
-                                       const ShadowValues& shadows) {
+void Canvas::DrawStringRectWithFlags(const base::string16& text,
+                                     const FontList& font_list,
+                                     SkColor color,
+                                     const Rect& text_bounds,
+                                     int flags) {
   NOTIMPLEMENTED();
 }
 
 void Canvas::DrawFadedString(const base::string16& text,
                              const FontList& font_list,
                              SkColor color,
                              const Rect& display_rect,
                              int flags) {
    NOTIMPLEMENTED();
 }
 
 }  // namespace gfx