For some vector icons, get the size from the vector definition.

chrome/browser/ui/views/tabs/tab.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/views/tabs/tab.h"
 
 #include <stddef.h>
 #include <limits>
 #include <utility>
 
@@ skipping 100 matching lines @@
 const SkColor kImmersiveInactiveTabColor = SkColorSetRGB(190, 190, 190);
 
 // The minimum opacity (out of 1) when a tab (either active or inactive) is
 // throbbing in the immersive mode light strip.
 const double kImmersiveTabMinThrobOpacity = 0.66;
 
 // Number of steps in the immersive mode loading animation.
 const int kImmersiveLoadingStepCount = 32;
 
 const char kTabCloseButtonName[] = "TabCloseButton";
-const int kTabCloseButtonSize = 16;
 
 // Returns the width of the tab endcap at scale 1.  More precisely, this is the
 // width of the curve making up either the outer or inner edge of the stroke;
 // since these two curves are horizontally offset by 1 px (regardless of scale),
 // the total width of the endcap from tab outer edge to the inside end of the
 // stroke inner edge is (GetUnscaledEndcapWidth() * scale) + 1.
 float GetUnscaledEndcapWidth() {
   return GetLayoutInsets(TAB).left() - 0.5f;
 }
 
@@ skipping 399 matching lines @@
   alert_indicator_button_ = new AlertIndicatorButton(this);
   AddChildView(alert_indicator_button_);
 
   close_button_ = new TabCloseButton(this);
   close_button_->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_ACCNAME_CLOSE));
   // The normal image is set by OnButtonColorMaybeChanged() because it depends
   // on the current theme and active state.  The hovered and pressed images
   // don't depend on the these, so we can set them here.
   const gfx::ImageSkia& hovered = gfx::CreateVectorIcon(
-      gfx::VectorIconId::TAB_CLOSE_HOVERED_PRESSED, kTabCloseButtonSize,
+      gfx::VectorIconId::TAB_CLOSE_HOVERED_PRESSED,
       SkColorSetRGB(0xDB, 0x44, 0x37));
   const gfx::ImageSkia& pressed = gfx::CreateVectorIcon(
-      gfx::VectorIconId::TAB_CLOSE_HOVERED_PRESSED, kTabCloseButtonSize,
+      gfx::VectorIconId::TAB_CLOSE_HOVERED_PRESSED,
       SkColorSetRGB(0xA8, 0x35, 0x2A));
   close_button_->SetImage(views::CustomButton::STATE_HOVERED, &hovered);
   close_button_->SetImage(views::CustomButton::STATE_PRESSED, &pressed);
 
   // Disable animation so that the red danger sign shows up immediately
   // to help avoid mis-clicks.
   close_button_->SetAnimationDuration(0);
   AddChildView(close_button_);
 
   set_context_menu_controller(this);
@@ skipping 1076 matching lines @@
 
   const SkColor title_color = theme_provider->GetColor(IsActive() ?
       ThemeProperties::COLOR_TAB_TEXT :
       ThemeProperties::COLOR_BACKGROUND_TAB_TEXT);
   const SkColor new_button_color = SkColorSetA(title_color, 0xA0);
   if (button_color_ != new_button_color) {
     button_color_ = new_button_color;
     title_->SetEnabledColor(title_color);
     alert_indicator_button_->OnParentTabButtonColorChanged();
     const gfx::ImageSkia& close_button_normal_image = gfx::CreateVectorIcon(
-        gfx::VectorIconId::TAB_CLOSE_NORMAL, kTabCloseButtonSize,
-        button_color_);
+        gfx::VectorIconId::TAB_CLOSE_NORMAL, button_color_);
     close_button_->SetImage(views::CustomButton::STATE_NORMAL,
                             &close_button_normal_image);
   }
 }
 
 void Tab::ScheduleIconPaint() {
   gfx::Rect bounds = favicon_bounds_;
   if (bounds.IsEmpty())
     return;
 
@@ skipping 110 matching lines @@
   inactive_images_.image_c = rb.GetImageSkiaNamed(IDR_TAB_INACTIVE_CENTER);
   inactive_images_.image_r = rb.GetImageSkiaNamed(IDR_TAB_INACTIVE_RIGHT);
   inactive_images_.l_width = inactive_images_.image_l->width();
   inactive_images_.r_width = inactive_images_.image_r->width();
 
   mask_images_.image_l = rb.GetImageSkiaNamed(IDR_TAB_ALPHA_LEFT);
   mask_images_.image_r = rb.GetImageSkiaNamed(IDR_TAB_ALPHA_RIGHT);
   mask_images_.l_width = mask_images_.image_l->width();
   mask_images_.r_width = mask_images_.image_r->width();
 }