Make extensions use ViewMsg_EnableIntrinsicWidthChangedMode.

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index e99f96168bc1656e26b42f0a765608a5e663c529..edf28f2441e1ca418adc12647b64c2d48b6adca6 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -1983,12 +1983,7 @@ void RenderView::DidContentsSizeChange(WebWidget* webwidget,
   // We don't always want to send the change messages over IPC, only if we've
   // be put in that mode by getting a |ViewMsg_EnableIntrinsicWidthChangedMode|
   // message.
-  // TODO(rafaelw): Figure out where the best place to set this for extensions
-  // is. It isn't clean to test for ExtensionView by examining the
-  // enabled_bindings. This needs to be generalized as it becomes clear what
-  // extension toolbars need.
-  if (BindingsPolicy::is_extension_enabled(enabled_bindings_) ||
-      send_preferred_width_changes_) {
+  if (send_preferred_width_changes_) {
     // WebCore likes to tell us things have changed even when they haven't, so
     // cache the width and only send the IPC message when we're sure the
     // width is different.