Fix hit testing to be aware of inert inlines.

Source/core/rendering/InlineBox.h

Index: Source/core/rendering/InlineBox.h
diff --git a/Source/core/rendering/InlineBox.h b/Source/core/rendering/InlineBox.h
index eb97253b00af9426ce333d874b420e8aca6ad230..a7025cf58e2d5c446dc3660b8bd1ceb376d23057 100644
--- a/Source/core/rendering/InlineBox.h
+++ b/Source/core/rendering/InlineBox.h
@@ -277,7 +277,7 @@ public:
 
     int expansion() const { return m_bitfields.expansion(); }
 
-    bool visibleToHitTestRequest(const HitTestRequest& request) const { return renderer()->style()->visibility() == VISIBLE && (request.ignorePointerEventsNone() || renderer()->style()->pointerEvents() != PE_NONE); }
+    bool visibleToHitTestRequest(const HitTestRequest& request) const { return renderer()->visibleToHitTestRequest(request); }

[eseidel, 2013/06/04 07:44:45]

Does this introduce an ancestor tree walk into hit-testing?  Wouldn't that make
hit-testing then O(N) based on the depth of the tree?  I'm extrapolating from an
imagined naive impelmentation.  That may not actually be a concern for your
patch at alll!

     
     EVerticalAlign verticalAlign() const { return renderer()->style(m_bitfields.firstLine())->verticalAlign(); }