Use toolbar separator color for trusted area

Uses COLOR_TOOLBAR_VERTICAL_SEPARATOR instead of the toolbar button
color. This matches the separators used in the bookmarks and download
bars.

Bug: chromium:822069
Change-Id: Iea05d91bebf432f90e58d09104118cb322b00e23
Reviewed-on: https://chromium-review.googlesource.com/1048842
Commit-Queue: Peter Boström <pbos@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556654}

chrome/browser/ui/views/toolbar/toolbar_view.cc

@@ -757,7 +757,8 @@ void ToolbarView::LoadImages() {
   const SkColor disabled_color =
       tp->GetColor(ThemeProperties::COLOR_TOOLBAR_BUTTON_ICON_INACTIVE);
 
-  browser_actions_->SetSeparatorColor(normal_color);
+  browser_actions_->SetSeparatorColor(
+      tp->GetColor(ThemeProperties::COLOR_TOOLBAR_VERTICAL_SEPARATOR));
 
   const bool is_touch =
       ui::MaterialDesignController::IsTouchOptimizedUiEnabled();