views: support disabled color for CTA buttons

ui/native_theme/common_theme.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 "ui/native_theme/common_theme.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/base/material_design/material_design_controller.h"
@@ skipping 119 matching lines @@
   static const SkColor kButtonHighlightColor = SkColorSetRGB(0, 0, 0);
   static const SkColor kButtonHoverColor = kButtonEnabledColor;
   static const SkColor kButtonHoverBackgroundColor =
       SkColorSetRGB(0xEA, 0xEA, 0xEA);
   static const SkColor kBlueButtonEnabledColor = SK_ColorWHITE;
   static const SkColor kBlueButtonDisabledColor = SK_ColorWHITE;
   static const SkColor kBlueButtonPressedColor = SK_ColorWHITE;
   static const SkColor kBlueButtonHoverColor = SK_ColorWHITE;
   static const SkColor kBlueButtonShadowColor = SkColorSetRGB(0x53, 0x8C, 0xEA);
   static const SkColor kCallToActionColor = gfx::kGoogleBlue500;
+  static const SkColor kCallToActionDisabledColor =
+      SkColorSetA(kCallToActionColor, 255.0 * 0.38);
   static const SkColor kTextOnCallToActionColor = SK_ColorWHITE;
   // MenuItem:
   static const SkColor kMenuBackgroundColor = SK_ColorWHITE;
   static const SkColor kMenuHighlightBackgroundColor =
       SkColorSetRGB(0x42, 0x81, 0xF4);
   static const SkColor kMenuBorderColor = SkColorSetRGB(0xBA, 0xBA, 0xBA);
   static const SkColor kEnabledMenuButtonBorderColor =
       SkColorSetARGB(0x24, 0x00, 0x00, 0x00);
   static const SkColor kFocusedMenuButtonBorderColor =
       SkColorSetARGB(0x48, 0x00, 0x00, 0x00);
@@ skipping 115 matching lines @@
     case NativeTheme::kColorId_BlueButtonDisabledColor:
       return kBlueButtonDisabledColor;
     case NativeTheme::kColorId_BlueButtonPressedColor:
       return kBlueButtonPressedColor;
     case NativeTheme::kColorId_BlueButtonHoverColor:
       return kBlueButtonHoverColor;
     case NativeTheme::kColorId_BlueButtonShadowColor:
       return kBlueButtonShadowColor;
     case NativeTheme::kColorId_CallToActionColor:
       return kCallToActionColor;
+    case NativeTheme::kColorId_CallToActionDisabledColor:
+      return kCallToActionDisabledColor;
     case NativeTheme::kColorId_TextOnCallToActionColor:
       return kTextOnCallToActionColor;
 
     // MenuItem
     case NativeTheme::kColorId_MenuBorderColor:
       return kMenuBorderColor;
     case NativeTheme::kColorId_EnabledMenuButtonBorderColor:
       return kEnabledMenuButtonBorderColor;
     case NativeTheme::kColorId_FocusedMenuButtonBorderColor:
       return kFocusedMenuButtonBorderColor;
@@ skipping 167 matching lines @@
   }
   if (menu_item.corner_radius > 0) {
     const SkScalar radius = SkIntToScalar(menu_item.corner_radius);
     canvas->drawRoundRect(gfx::RectToSkRect(rect), radius, radius, paint);
     return;
   }
   canvas->drawRect(gfx::RectToSkRect(rect), paint);
 }
 
 }  // namespace ui