MD - Fix coloring of buttons on DL shelf.

chrome/browser/ui/views/download/download_shelf_view.cc

Index: chrome/browser/ui/views/download/download_shelf_view.cc
diff --git a/chrome/browser/ui/views/download/download_shelf_view.cc b/chrome/browser/ui/views/download/download_shelf_view.cc
index e474e4c0bc5057d37580f48a5108e06b72034183..f5dc22870c4748d7ca6126975311380827fad816 100644
--- a/chrome/browser/ui/views/download/download_shelf_view.cc
+++ b/chrome/browser/ui/views/download/download_shelf_view.cc
@@ -392,7 +392,11 @@ void DownloadShelfView::UpdateColorsFromTheme() {
     set_background(views::Background::CreateSolidBackground(
         GetThemeProvider()->GetColor(ThemeProperties::COLOR_TOOLBAR)));
 
-    if (!ui::MaterialDesignController::IsModeMaterial()) {
+    if (ui::MaterialDesignController::IsModeMaterial()) {
+      static_cast<views::LabelButton*>(show_all_view_)

[sky, 2016/06/23 15:28:00]

grumble, static_cast, grumble.
This cast is easy to miss and fragile. How about adding another member, say
show_all_view_md_ this is the LableButton?

[Evan Stade, 2016/06/23 17:05:49]

well hopefully we'll be able to rip out non-md code soon which would obviate the
need for this cast, but I've gone ahead and added the member.

+          ->SetEnabledTextColors(GetThemeProvider()->GetColor(
+              ThemeProperties::COLOR_BOOKMARK_TEXT));
+    } else {
       views::Link* show_all_view = static_cast<views::Link*>(show_all_view_);
       show_all_view->SetBackgroundColor(background()->get_color());
       show_all_view->SetEnabledColor(