3 files changed, 10 insertions, 1 deletions
diff --git a/WebCore/rendering/style/RenderStyle.cpp b/WebCore/rendering/style/RenderStyle.cpp
index 0952557..712344f 100644
--- a/WebCore/rendering/style/RenderStyle.cpp
+++ b/WebCore/rendering/style/RenderStyle.cpp
@@ -192,6 +192,11 @@ static inline int pseudoBit(PseudoId pseudo)
     return 1 << (pseudo - 1);
 }
 
+bool RenderStyle::hasAnyPublicPseudoStyles() const
+{
+    return PUBLIC_PSEUDOID_MASK & noninherited_flags._pseudoBits;
+}
+
 bool RenderStyle::hasPseudoStyle(PseudoId pseudo) const
 {
     ASSERT(pseudo > NOPSEUDO);
diff --git a/WebCore/rendering/style/RenderStyle.h b/WebCore/rendering/style/RenderStyle.h
index 696a2b7..c7db254 100644
--- a/WebCore/rendering/style/RenderStyle.h
+++ b/WebCore/rendering/style/RenderStyle.h
@@ -350,6 +350,7 @@ public:
 
     bool isStyleAvailable() const;
 
+    bool hasAnyPublicPseudoStyles() const;
     bool hasPseudoStyle(PseudoId pseudo) const;
     void setHasPseudoStyle(PseudoId pseudo);
 
diff --git a/WebCore/rendering/style/RenderStyleConstants.h b/WebCore/rendering/style/RenderStyleConstants.h
index 01862f6..4abbc1c 100644
--- a/WebCore/rendering/style/RenderStyleConstants.h
+++ b/WebCore/rendering/style/RenderStyleConstants.h
@@ -66,6 +66,7 @@ enum StyleDifferenceContextSensitiveProperty {
 
 // Static pseudo styles. Dynamic ones are produced on the fly.
 enum PseudoId {
+    // The order must be NOP ID, public IDs, and then internal IDs.
     NOPSEUDO, FIRST_LINE, FIRST_LETTER, BEFORE, AFTER, SELECTION, FIRST_LINE_INHERITED, SCROLLBAR, FILE_UPLOAD_BUTTON, INPUT_PLACEHOLDER,
     SLIDER_THUMB, SEARCH_CANCEL_BUTTON, SEARCH_DECORATION, SEARCH_RESULTS_DECORATION, SEARCH_RESULTS_BUTTON, MEDIA_CONTROLS_PANEL,
     MEDIA_CONTROLS_PLAY_BUTTON, MEDIA_CONTROLS_MUTE_BUTTON, MEDIA_CONTROLS_TIMELINE, MEDIA_CONTROLS_TIMELINE_CONTAINER,
@@ -75,7 +76,9 @@ enum PseudoId {
     MEDIA_CONTROLS_STATUS_DISPLAY, SCROLLBAR_THUMB, SCROLLBAR_BUTTON, SCROLLBAR_TRACK, SCROLLBAR_TRACK_PIECE, SCROLLBAR_CORNER, RESIZER,
     INPUT_LIST_BUTTON, INNER_SPIN_BUTTON, OUTER_SPIN_BUTTON,
 
-    FIRST_INTERNAL_PSEUDOID = FILE_UPLOAD_BUTTON
+    FIRST_PUBLIC_PSEUDOID = FIRST_LINE,
+    FIRST_INTERNAL_PSEUDOID = FILE_UPLOAD_BUTTON,
+    PUBLIC_PSEUDOID_MASK = ((1 << FIRST_INTERNAL_PSEUDOID) - 1) & ~((1 << FIRST_PUBLIC_PSEUDOID) - 1)
 };
 
 // These have been defined in the order of their precedence for border-collapsing. Do