Set download shelf, infobar and status bubble colors for GTK themes.

Bug: 944941
Change-Id: I550c11f4ff5177be7ec7c4d23be457b1c05e3b2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1540070
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644688}

chrome/browser/ui/libgtkui/gtk_ui.cc

@@ -908,6 +908,9 @@ void GtkUi::UpdateColors() {
         color_utils::GetResultingPaintColor(GetBgColor(""), frame_color);
 
     color_map[ThemeProperties::COLOR_TOOLBAR] = tab_color;
+    color_map[ThemeProperties::COLOR_DOWNLOAD_SHELF] = tab_color;
+    color_map[ThemeProperties::COLOR_INFOBAR] = tab_color;
+    color_map[ThemeProperties::COLOR_STATUS_BUBBLE] = tab_color;
 
     const SkColor background_tab_text_color =
         GetFgColor(header_selector + " GtkLabel.title");