Switch from WebDocument::insertStyleText to ::insertUserStyleSheet for programatic CSS injection.

content/renderer/render_view.cc

Index: content/renderer/render_view.cc
diff --git a/content/renderer/render_view.cc b/content/renderer/render_view.cc
index d0f09c703dba14c6bb62ff57a311adcc066ab4d2..1fa51521701bac7de29ac188f51a620714d904ea 100644
--- a/content/renderer/render_view.cc
+++ b/content/renderer/render_view.cc
@@ -3385,14 +3385,14 @@ void RenderView::OnScriptEvalRequest(const string16& frame_xpath,
 }
 
 void RenderView::OnCSSInsertRequest(const std::wstring& frame_xpath,
-                                    const std::string& css,
-                                    const std::string& id) {
+                                    const std::string& css) {
   WebFrame* frame = GetChildFrame(frame_xpath);
   if (!frame)
     return;
 
-  frame->document().insertStyleText(WebString::fromUTF8(css),
-                                    WebString::fromUTF8(id));
+  frame->document().insertUserStyleSheet(
+      WebString::fromUTF8(css),
+      WebDocument::UserStyleAuthorLevel);
 }
 
 void RenderView::OnAllowBindings(int enabled_bindings_flags) {