Correctly handle extensions width in the GTK extension shelf.

chrome/browser/extensions/extension_host.cc

Index: chrome/browser/extensions/extension_host.cc
diff --git a/chrome/browser/extensions/extension_host.cc b/chrome/browser/extensions/extension_host.cc
index 17062ce8c5224c6cc022406a94bc36f986c4dc32..ee81c39a36c6f6662200f36e4126d795f99ff4c8 100644
--- a/chrome/browser/extensions/extension_host.cc
+++ b/chrome/browser/extensions/extension_host.cc
@@ -178,9 +178,9 @@ void ExtensionHost::RecoverCrashedExtension() {
 }
 
 void ExtensionHost::UpdatePreferredWidth(int pref_width) {
-#if defined(OS_WIN)
+#if defined(TOOLKIT_VIEWS) || defined(OS_LINUX)
   if (view_.get())
-    view_->DidContentsPreferredWidthChange(pref_width);
+    view_->UpdatePreferredWidth(pref_width);
 #endif
 }