Remove the concept of user stylesheets.

public/web/WebDocument.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 class WebFormElement;
 class WebFrame;
 class WebNodeCollection;
 class WebNodeList;
 class WebString;
 class WebURL;
 
 // Provides readonly access to some properties of a DOM document.
 class WebDocument : public WebNode {
 public:
+    // FIXME: Stop using this from Chromium code and get rid of this enum.
     enum UserStyleLevel {
-        UserStyleUserLevel,
         UserStyleAuthorLevel
     };
 
     WebDocument() { }
     WebDocument(const WebDocument& e) : WebNode(e) { }
 
     WebDocument& operator=(const WebDocument& e)
     {
         WebNode::assign(e);
         return *this;
@@ skipping 42 matching lines @@
 
     // Accessibility support. These methods should only be called on the
     // top-level document, because one accessibility cache spans all of
     // the documents on the page.
 
     // Gets the accessibility object for this document.
     BLINK_EXPORT WebAXObject accessibilityObject() const;
 
     // Gets the accessibility object for an object on this page by ID.
     BLINK_EXPORT WebAXObject accessibilityObjectFromID(int axID) const;
-    // Inserts the given CSS source code as a user stylesheet in the document.
-    // Meant for programatic/one-off injection, as opposed to
-    // WebView::addUserStyleSheet which inserts styles for the lifetime of the
-    // WebView.
+    // Inserts the given CSS source code as a stylesheet in the document.
+    // FIXME: Delete insertUserStyleSheet once Chromium code stops calling it.
     BLINK_EXPORT void insertUserStyleSheet(const WebString& sourceCode, UserStyleLevel);
+    BLINK_EXPORT void insertStyleSheet(const WebString& sourceCode);
 
     // Arranges to call WebFrameClient::didMatchCSS(frame(), ...) when one of
     // the selectors matches or stops matching an element in this document.
     // Each call to this method overrides any previous calls.
     BLINK_EXPORT void watchCSSSelectors(const WebVector<WebString>& selectors);
 
     BLINK_EXPORT WebVector<WebDraggableRegion> draggableRegions() const;
 
     BLINK_EXPORT v8::Handle<v8::Value> registerEmbedderCustomElement(const WebString& name, v8::Handle<v8::Value> options, WebExceptionCode&);
 
 #if BLINK_IMPLEMENTATION
     WebDocument(const WTF::PassRefPtr<WebCore::Document>&);
     WebDocument& operator=(const WTF::PassRefPtr<WebCore::Document>&);
     operator WTF::PassRefPtr<WebCore::Document>() const;
 #endif
 };
 
 } // namespace blink
 
 #endif