Revert 190605 "Make RenderObject::style() return a const object"

trunk/Source/core/layout/style/LayoutStyle.cpp

Index: trunk/Source/core/layout/style/LayoutStyle.cpp
===================================================================
--- trunk/Source/core/layout/style/LayoutStyle.cpp	(revision 190671)
+++ trunk/Source/core/layout/style/LayoutStyle.cpp	(working copy)
@@ -331,8 +331,8 @@
     if (!m_cachedPseudoStyles)
         return;
     for (size_t i = 0; i < m_cachedPseudoStyles->size(); ++i) {
-        const LayoutStyle& pseudoStyle = *m_cachedPseudoStyles->at(i);
-        if (pseudoStyle.styleType() == pid) {
+        LayoutStyle* pseudoStyle = m_cachedPseudoStyles->at(i).get();
+        if (pseudoStyle->styleType() == pid) {
             m_cachedPseudoStyles->remove(i);
             return;
         }