Implement MD simple gesture nav

chrome/browser/ui/cocoa/toolbar/toolbar_button_cocoa.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_button_cocoa.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/mac/sdk_forward_declarations.h"
 #include "chrome/app/vector_icons/vector_icons.h"
 #import "chrome/browser/ui/cocoa/image_button_cell.h"
 #import "chrome/browser/ui/cocoa/l10n_util.h"
 #import "chrome/browser/ui/cocoa/view_id_util.h"
 #include "skia/ext/skia_utils_mac.h"
 #import "ui/base/cocoa/nsview_additions.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/theme_provider.h"
 #include "ui/gfx/image/image_skia_util_mac.h"
 #include "ui/gfx/paint_vector_icon.h"
+#include "ui/vector_icons/vector_icons.h"
 
 namespace {
 
 // Toolbar buttons are 24x24 in Material Design.
 const NSRect kMDButtonBounds = NSMakeRect(0, 0, 24, 24);
 
 // The size of a toolbar button icon in Material Design. A toolbar button image
 // consists of a border and background, with a centered icon.
 const NSSize kMDButtonIconSize = NSMakeSize(16, 16);
 
@@ skipping 173 matching lines @@
   // Match the hover image's bezel.
   [[NSBezierPath bezierPathWithRoundedRect:NSInsetRect([self bounds], 2, 2)
                                    xRadius:2
                                    yRadius:2] fill];
 }
 
 - (const gfx::VectorIcon*)vectorIcon {
   BOOL isRTL = cocoa_l10n_util::ShouldDoExperimentalRTLLayout();
   switch ([self viewID]) {
     case VIEW_ID_BACK_BUTTON:
-      return isRTL ? &kNavigateForwardIcon : &kNavigateBackIcon;
+      return isRTL ? &ui::kForwardArrowIcon : &ui::kBackArrowIcon;
     case VIEW_ID_FORWARD_BUTTON:
-      return isRTL ? &kNavigateBackIcon : &kNavigateForwardIcon;
+      return isRTL ? &ui::kBackArrowIcon : &ui::kForwardArrowIcon;
     case VIEW_ID_HOME_BUTTON:
       return &kNavigateHomeIcon;
     case VIEW_ID_APP_MENU:
       return &kBrowserToolsIcon;
     default:
       break;
   }
 
   return nullptr;
 }
@@ skipping 152 matching lines @@
 
 - (void)windowDidChangeTheme {
   // Update the hover and pressed image backgrounds to match the current theme.
   [self resetButtonStateImages];
 }
 
 - (void)windowDidChangeActive {
 }
 
 @end