Remove code doing a no-op due to float -> int rounding.

chrome/browser/gtk/tab_contents_drag_source.cc

Index: chrome/browser/gtk/tab_contents_drag_source.cc
diff --git a/chrome/browser/gtk/tab_contents_drag_source.cc b/chrome/browser/gtk/tab_contents_drag_source.cc
index 146cbd74f085ea640cc98e79e7d75039211a12bd..1b6b94cb84f2959f06ca4fea9ca84e72ee2c6d85 100644
--- a/chrome/browser/gtk/tab_contents_drag_source.cc
+++ b/chrome/browser/gtk/tab_contents_drag_source.cc
@@ -115,7 +115,9 @@ void TabContentsDragSource::DidProcessEvent(GdkEvent* event) {
 
   if (tab_contents()->render_view_host()) {
     tab_contents()->render_view_host()->DragSourceMovedTo(
-        client.x(), client.y(), event_motion->x_root, event_motion->y_root);
+        client.x(), client.y(),
+        static_cast<int>(event_motion->x_root),
+        static_cast<int>(event_motion->y_root));
   }
 }