Introduce setNeedsActiveStyleUpdate for adding/removing stylesheets.

third_party/WebKit/Source/core/dom/Document.h

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index b8c2865e2ed49791223acdb992c35b55ac94c368..bb70f9f76b5e19315094e66bd5a57be42221f0e0 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -383,11 +383,6 @@ public:
     bool gotoAnchorNeededAfterStylesheetsLoad() { return m_gotoAnchorNeededAfterStylesheetsLoad; }
     void setGotoAnchorNeededAfterStylesheetsLoad(bool b) { m_gotoAnchorNeededAfterStylesheetsLoad = b; }
 
-    // FIXME: Switch all callers of resolverChanged to these or better ones and then make them
-    // do something smarter.
-    void removedStyleSheet(StyleSheet*, StyleResolverUpdateMode = FullStyleUpdate);
-    void modifiedStyleSheet(StyleSheet*, StyleResolverUpdateMode = FullStyleUpdate);
-
     void scheduleUseShadowTreeUpdate(SVGUseElement&);
     void unscheduleUseShadowTreeUpdate(SVGUseElement&);