1 files changed, 13 insertions, 12 deletions
diff --git a/Source/WebCore/css/CSSStyleRule.cpp b/Source/WebCore/css/CSSStyleRule.cpp
index 7f82ae593..365d8d90f 100644
--- a/Source/WebCore/css/CSSStyleRule.cpp
+++ b/Source/WebCore/css/CSSStyleRule.cpp
@@ -26,10 +26,10 @@
 #include "CSSSelector.h"
 #include "CSSStyleSheet.h"
 #include "Document.h"
-#include "MemoryInstrumentation.h"
 #include "PropertySetCSSStyleDeclaration.h"
 #include "StylePropertySet.h"
 #include "StyleRule.h"
+#include "WebCoreMemoryInstrumentation.h"
 #include <wtf/text/StringBuilder.h>
 
 namespace WebCore {
@@ -101,24 +101,25 @@ void CSSStyleRule::setSelectorText(const String& selectorText)
 
     CSSStyleSheet::RuleMutationScope mutationScope(this);
 
-    String oldSelectorText = this->selectorText();
     m_styleRule->wrapperAdoptSelectorList(selectorList);
 
     if (hasCachedSelectorText()) {
-        ASSERT(selectorTextCache().contains(this));
-        selectorTextCache().set(this, generateSelectorText());
+        selectorTextCache().remove(this);
+        setHasCachedSelectorText(false);
     }
 }
 
 String CSSStyleRule::cssText() const
 {
-    String result = selectorText();
-
-    result += " { ";
-    result += m_styleRule->properties()->asText();
-    result += "}";
-
-    return result;
+    StringBuilder result;
+    result.append(selectorText());
+    result.appendLiteral(" { ");
+    String decls = m_styleRule->properties()->asText();
+    result.append(decls);
+    if (!decls.isEmpty())
+        result.append(' ');
+    result.append('}');
+    return result.toString();
 }
 
 void CSSStyleRule::reattach(StyleRule* rule)
@@ -130,7 +131,7 @@ void CSSStyleRule::reattach(StyleRule* rule)
 
 void CSSStyleRule::reportDescendantMemoryUsage(MemoryObjectInfo* memoryObjectInfo) const
 {
-    MemoryClassInfo info(memoryObjectInfo, this, MemoryInstrumentation::CSS);
+    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::CSS);
     CSSRule::reportBaseClassMemoryUsage(memoryObjectInfo);
     info.addInstrumentedMember(m_styleRule);
     info.addInstrumentedMember(m_propertiesCSSOMWrapper);