Revert "Fix a ton of compiler warnings."

chrome/browser/gtk/slide_animator_gtk.cc

Index: chrome/browser/gtk/slide_animator_gtk.cc
diff --git a/chrome/browser/gtk/slide_animator_gtk.cc b/chrome/browser/gtk/slide_animator_gtk.cc
index 519a58fa2cbe4028357d4e59b72a396aba6e364a..866aca5e54566c1277c9e2de38b5a6d1ba533166 100644
--- a/chrome/browser/gtk/slide_animator_gtk.cc
+++ b/chrome/browser/gtk/slide_animator_gtk.cc
@@ -107,8 +107,8 @@ bool SlideAnimatorGtk::IsClosing() {
 }
 
 void SlideAnimatorGtk::AnimationProgressed(const Animation* animation) {
-  int showing_height = static_cast<int>(child_->allocation.height *
-                                        animation_->GetCurrentValue());
+  int showing_height = child_->allocation.height *
+                       animation_->GetCurrentValue();
   if (direction_ == DOWN) {
     gtk_fixed_move(GTK_FIXED(widget_.get()), child_, 0,
                    showing_height - child_->allocation.height);