Dynamically compute tab/frame separator color.

chrome/browser/ui/views/frame/opaque_browser_frame_view.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/frame/opaque_browser_frame_view.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 729 matching lines @@
   const bool incognito = browser_view()->IsOffTheRecord();
   const bool toolbar_visible = IsToolbarVisible();
   int img_y_offset = 0;
   if (tabstrip_visible) {
     toolbar_color = tp->GetColor(ThemeProperties::COLOR_TOOLBAR);
 
     // Pre-Material Design, the client edge images start below the toolbar.  In
     // MD the client edge images start at the top of the toolbar.
     y += md ? toolbar_bounds.y() : toolbar_bounds.bottom();
   } else {
+    // Note that windows without tabstrips are never themed, so we always use
+    // the default colors in this section.
     toolbar_color = ThemeProperties::GetDefaultColor(
         ThemeProperties::COLOR_TOOLBAR, incognito);
 
     // The toolbar isn't going to draw a top edge for us, so draw one ourselves.
     if (md) {
       client_bounds.Inset(-kClientEdgeThickness, -1, -kClientEdgeThickness,
                           client_bounds.height());
 
       // Shadow.
       BrowserView::Paint1pxHorizontalLine(
-          canvas, tp->GetColor(ThemeProperties::COLOR_TOOLBAR_TOP_SEPARATOR),
+          canvas,
+          ThemeProperties::GetDefaultColor(
+              ThemeProperties::COLOR_TOOLBAR_TOP_SEPARATOR, incognito),
           client_bounds, true);
     } else {
       // Ensure the client edge rects are drawn to the top of the location bar.
       img_y_offset = kClientEdgeThickness;
 
       // Shadow.
       const gfx::ImageSkia* const top_left =
           tp->GetImageSkiaNamed(IDR_APP_TOP_LEFT);
       const int img_w = top_left->width();
       const int height = top_left->height();
@@ skipping 58 matching lines @@
   gfx::Rect side(x, y, kClientEdgeThickness, h);
   canvas->FillRect(side, color);
   if (draw_bottom) {
     canvas->FillRect(gfx::Rect(x, y + h, w + (2 * kClientEdgeThickness),
                                kClientEdgeThickness),
                      color);
   }
   side.Offset(w + kClientEdgeThickness, 0);
   canvas->FillRect(side, color);
 }