[Mac] Use correct stroke color for toolbar top edge in Material Design.

chrome/browser/themes/theme_properties.cc

 // Copyright (c) 2013 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/themes/theme_properties.h"
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
@@ skipping 129 matching lines @@
     SkColorSetRGB(255, 0, 0), SkColorSetRGB(45, 45, 45)};
 const SkColor kDefaultColorTabBackgroundInactive[] = {
     SkColorSetRGB(255, 0, 0), SkColorSetRGB(236, 236, 236)};
 const SkColor kDefaultColorTabBackgroundInactiveIncognito[] = {
     SkColorSetRGB(255, 0, 0), SkColorSetRGB(40, 40, 40)};
 const SkColor kDefaultColorToolbarButtonStroke = SkColorSetARGB(75, 81, 81, 81);
 const SkColor kDefaultColorToolbarButtonStrokeInactive =
     SkColorSetARGB(75, 99, 99, 99);
 const SkColor kDefaultColorToolbarBezel = SkColorSetRGB(204, 204, 204);
 const SkColor kDefaultColorToolbarStroke[] = {
-    SkColorSetRGB(103, 103, 103), SkColorSetARGB(37, 0, 0, 0)};
+    SkColorSetRGB(103, 103, 103), SkColorSetARGB(76, 0, 0, 0)};
 const SkColor kDefaultColorToolbarStrokeInactive = SkColorSetRGB(163, 163, 163);
 const SkColor kDefaultColorToolbarIncognitoStroke[] = {
     SkColorSetRGB(255, 0, 0), SkColorSetARGB(63, 0, 0, 0)};
 const SkColor kDefaultColorToolbarStrokeTheme =
     SkColorSetARGB(102, 255, 255, 255);
 const SkColor kDefaultColorToolbarStrokeThemeInactive =
     SkColorSetARGB(102, 76, 76, 76);
 #endif  // OS_MACOSX
 // ----------------------------------------------------------------------------
 
@@ skipping 216 matching lines @@
 #endif
     case COLOR_FRAME_INCOGNITO:
     case COLOR_FRAME_INCOGNITO_INACTIVE:
       NOTREACHED() << "These values should be queried via their respective "
                       "non-incognito equivalents and an appropriate |otr| "
                       "value.";
     default:
       return gfx::kPlaceholderColor;
   }
 }