Fix the component build for VS2010 while https://chromiumcodereview.appspot.com/10121004/ is being …

ui/views/controls/webview/webview.h

Index: ui/views/controls/webview/webview.h
diff --git a/ui/views/controls/webview/webview.h b/ui/views/controls/webview/webview.h
index 5a73dc967f1677fb904ec300f24f9d8604c3a3f6..14263628e2de22db486772709e9317327bd7e189 100644
--- a/ui/views/controls/webview/webview.h
+++ b/ui/views/controls/webview/webview.h
@@ -17,9 +17,10 @@ namespace views {
 
 class NativeViewHost;
 
-class VIEWS_EXPORT WebView : public View,
-                             public content::NotificationObserver,
-                             public content::WebContentsDelegate {
+class VIEWS_EXPORT WebView
+    : public View,
+      public NON_EXPORTED_BASE(content::NotificationObserver),
+      public NON_EXPORTED_BASE(content::WebContentsDelegate) {
  public:
   static const char kViewClassName[];