MacViews: Style BUTTON_STYLE buttons using the "modern" UI

ui/views/style/platform_style_mac.mm

 // 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 "ui/views/style/platform_style.h"
 
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/paint_vector_icon.h"
 #include "ui/gfx/vector_icons.h"
 #include "ui/resources/grit/ui_resources.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/button/label_button_border.h"
 #include "ui/views/controls/focusable_rounded_border_mac.h"
 #import "ui/views/controls/scrollbar/cocoa_scroll_bar.h"
 #include "ui/views/style/mac/combobox_background_mac.h"
 #include "ui/views/style/mac/dialog_button_border_mac.h"
 
 namespace views {
 
+const int PlatformStyle::kMinLabelButtonWidth = 32;
+const int PlatformStyle::kMinLabelButtonHeight = 30;
+const bool PlatformStyle::kDefaultLabelButtonHasBoldFont = false;
+
 // static
 gfx::ImageSkia PlatformStyle::CreateComboboxArrow(bool is_enabled,
                                                   Combobox::Style style) {
   // TODO(ellyjones): IDR_MENU_DROPARROW is a cross-platform image that doesn't
   // look right on Mac. See https://crbug.com/384071.
   if (style == Combobox::STYLE_ACTION) {
     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
     return *rb.GetImageSkiaNamed(IDR_MENU_DROPARROW);
   }
   const int kComboboxArrowWidth = 13;
@@ skipping 19 matching lines @@
     return make_scoped_ptr(new DialogButtonBorderMac());
 
   return make_scoped_ptr(new LabelButtonAssetBorder(style));
 }
 
 // static
 scoped_ptr<ScrollBar> PlatformStyle::CreateScrollBar(bool is_horizontal) {
   return make_scoped_ptr(new CocoaScrollBar(is_horizontal));
 }
 
+// static
+SkColor PlatformStyle::TextColorForButton(
+    const ButtonColorByState& color_by_state,
+    const LabelButton& button) {
+  Button::ButtonState state = button.state();
+  if (button.style() == Button::STYLE_BUTTON &&
+      DialogButtonBorderMac::ShouldRenderDefault(button)) {
+    // For convenience, we currently assume Mac wants the color corresponding to
+    // the pressed state for default buttons.
+    state = Button::STATE_PRESSED;
+  }
+  return color_by_state[state];
+}
+
+// static
+void PlatformStyle::ApplyLabelButtonTextStyle(
+    views::Label* label,
+    ButtonColorByState* color_by_state) {
+  const ui::NativeTheme* theme = label->GetNativeTheme();
+  ButtonColorByState& colors = *color_by_state;
+  colors[Button::STATE_PRESSED] =
+      theme->GetSystemColor(ui::NativeTheme::kColorId_ButtonHighlightColor);
+}
+
 }  // namespace views