Revert "Fix a ton of compiler warnings."

chrome/browser/gtk/download_item_gtk.cc

Index: chrome/browser/gtk/download_item_gtk.cc
diff --git a/chrome/browser/gtk/download_item_gtk.cc b/chrome/browser/gtk/download_item_gtk.cc
index 90bb01991d1b1ad2c51de9794f45a91c222f7358..815459a3b3703786dada5ceb6d6158d1c8f18bd8 100644
--- a/chrome/browser/gtk/download_item_gtk.cc
+++ b/chrome/browser/gtk/download_item_gtk.cc
@@ -428,9 +428,9 @@ void DownloadItemGtk::AnimationProgressed(const Animation* animation) {
     gtk_widget_queue_draw(progress_area_.get());
   } else {
     if (IsDangerous()) {
-      int progress = static_cast<int>((dangerous_hbox_full_width_ -
-                                       dangerous_hbox_start_width_) *
-                                      new_item_animation_->GetCurrentValue());
+      int progress = (dangerous_hbox_full_width_ -
+                     dangerous_hbox_start_width_) *
+                     new_item_animation_->GetCurrentValue();
       int showing_width = dangerous_hbox_start_width_ + progress;
       gtk_widget_set_size_request(dangerous_hbox_, showing_width, -1);
     } else {