Pull the file picker code out of TabContents.

chrome/browser/ui/tab_contents/tab_contents_wrapper.cc

Index: chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
diff --git a/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc b/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
index 496b1fb7531809c3e897ec076abf58489dc075f4..ad5b5a18081e3f4cdec0c5a45e2b38dd1da450ae 100644
--- a/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
+++ b/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/custom_handlers/register_protocol_handler_infobar_delegate.h"
+#include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/password_manager_delegate_impl.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ -56,6 +57,8 @@ TabContentsWrapper::TabContentsWrapper(TabContents* contents)
   registrar_.Add(this, NotificationType::BOOKMARK_MODEL_LOADED,
                  NotificationService::AllSources());
 
+  // Create the per-tab observers.
+  file_select_observer_.reset(new FileSelectObserver(contents));
   prerender_observer_.reset(new prerender::PrerenderObserver(contents));
 }