Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/autofill/autofill_external_delegate.cc

Index: chrome/browser/autofill/autofill_external_delegate.cc
diff --git a/chrome/browser/autofill/autofill_external_delegate.cc b/chrome/browser/autofill/autofill_external_delegate.cc
index 90f71a873a43ec6b91a1d3da32f84c2d89fbfd2f..16d3ff5148f3d78ae24ff7b88ee15e31dfe423f1 100644
--- a/chrome/browser/autofill/autofill_external_delegate.cc
+++ b/chrome/browser/autofill/autofill_external_delegate.cc
@@ -9,6 +9,7 @@
 #include "chrome/common/autofill_messages.h"
 #include "chrome/common/chrome_constants.h"
 #include "content/browser/renderer_host/render_view_host.h"
+#include "content/browser/tab_contents/tab_contents.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
@@ -24,7 +25,8 @@ AutofillExternalDelegate::AutofillExternalDelegate(
 }
 
 void AutofillExternalDelegate::SelectAutofillSuggestionAtIndex(int listIndex) {
-  RenderViewHost* host = tab_contents_wrapper_->render_view_host();
+  RenderViewHost* host =
+      tab_contents_wrapper_->tab_contents()->render_view_host();
   host->Send(new AutofillMsg_SelectAutofillSuggestionAtIndex(
                  host->routing_id(),
                  listIndex));