[MD] Share button code between find bar and download shelf

chrome/browser/ui/views/download/download_item_view_md.h

Index: chrome/browser/ui/views/download/download_item_view_md.h
diff --git a/chrome/browser/ui/views/download/download_item_view_md.h b/chrome/browser/ui/views/download/download_item_view_md.h
index 2d6990633b16f031aa6e0c79bb1610df74d5075a..2d646dbbe372b74e44c1f0229ea1e3925ecf3223 100644
--- a/chrome/browser/ui/views/download/download_item_view_md.h
+++ b/chrome/browser/ui/views/download/download_item_view_md.h
@@ -35,6 +35,7 @@
 #include "ui/views/controls/button/button.h"
 #include "ui/views/view.h"
 
+class BarControlButton;
 class DownloadShelfView;
 class DownloadShelfContextMenuView;
 
@@ -48,6 +49,10 @@ class ImageSkia;
 class SlideAnimation;
 }
 
+namespace ui {
+class ThemeProvider;
+}
+
 namespace views {
 class ImageButton;
 class Label;
@@ -71,6 +76,9 @@ class DownloadItemViewMd : public views::ButtonListener,
   void StartDownloadProgress();
   void StopDownloadProgress();
 
+  // Returns the base color for text on this download item, based on |theme|.
+  static SkColor GetTextColorForThemeProvider(ui::ThemeProvider* theme);
+
   // IconManager::Client interface.
   void OnExtractIconComplete(gfx::Image* icon);
 
@@ -205,6 +213,12 @@ class DownloadItemViewMd : public views::ButtonListener,
                               State to,
                               gfx::SlideAnimation* animation);
 
+  // Returns the base text color.
+  SkColor GetTextColor();
+
+  // Returns a slightly dimmed version of the base text color.
+  SkColor GetDimmedTextColor();
+
   // The download shelf that owns us.
   DownloadShelfView* shelf_;
 
@@ -264,7 +278,7 @@ class DownloadItemViewMd : public views::ButtonListener,
   views::LabelButton* discard_button_;
 
   // The drop down button.
-  views::ImageButton* dropdown_button_;
+  BarControlButton* dropdown_button_;
 
   // Dangerous mode label.
   views::Label* dangerous_download_label_;