One instead of three resolverChanged replacing source in inspector.

third_party/WebKit/Source/core/css/CSSStyleSheet.cpp

Index: third_party/WebKit/Source/core/css/CSSStyleSheet.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSStyleSheet.cpp b/third_party/WebKit/Source/core/css/CSSStyleSheet.cpp
index 07cf951e3e14a049e0f92b08f1e0ae2944781608..67667d73c7a7efe3d7ea1d40e188898393774252 100644
--- a/third_party/WebKit/Source/core/css/CSSStyleSheet.cpp
+++ b/third_party/WebKit/Source/core/css/CSSStyleSheet.cpp
@@ -413,11 +413,6 @@ void CSSStyleSheet::setAllowRuleAccessFromOrigin(PassRefPtr<SecurityOrigin> allo
     m_allowRuleAccessFromOrigin = allowedOrigin;
 }
 
-void CSSStyleSheet::clearChildRuleCSSOMWrappers()
-{
-    m_childRuleCSSOMWrappers.clear();
-}
-
 bool CSSStyleSheet::sheetLoaded()
 {
     ASSERT(m_ownerNode);
@@ -444,6 +439,15 @@ void CSSStyleSheet::setLoadCompleted(bool completed)
         m_contents->clientLoadStarted(this);
 }
 
+void CSSStyleSheet::setText(const String& text)
+{
+    m_childRuleCSSOMWrappers.clear();
+
+    CSSStyleSheet::RuleMutationScope mutationScope(this);
+    m_contents->clearRules();
+    m_contents->parseString(text);
+}
+
 DEFINE_TRACE(CSSStyleSheet)
 {
     visitor->trace(m_contents);