DevTools: reduce ResourceAgent dependency on PageAgent.

Source/core/inspector/InspectorStyleSheet.cpp

Index: Source/core/inspector/InspectorStyleSheet.cpp
diff --git a/Source/core/inspector/InspectorStyleSheet.cpp b/Source/core/inspector/InspectorStyleSheet.cpp
index 4db2d6fc98a5d2982192d1d0d4e0892b3fb64121..d40c8ca8ecc63b636a5c899d91b6a6e7acc35566 100644
--- a/Source/core/inspector/InspectorStyleSheet.cpp
+++ b/Source/core/inspector/InspectorStyleSheet.cpp
@@ -1553,9 +1553,13 @@ bool InspectorStyleSheet::resourceStyleSheetText(String* result) const
     if (!ownerDocument())
         return false;
 
+    KURL url(ParsedURLString, m_pageStyleSheet->href());
+    if (m_pageAgent->getEditedResourceContent(url, result))
+        return true;
+
     bool base64Encoded;
-    bool success = m_resourceAgent->fetchResourceContent(ownerDocument(), KURL(ParsedURLString, m_pageStyleSheet->href()), result, &base64Encoded) && !base64Encoded;
-    return success;
+    bool success = m_resourceAgent->fetchResourceContent(ownerDocument(), url, result, &base64Encoded);
+    return success && !base64Encoded;
 }
 
 Element* InspectorStyleSheet::ownerStyleElement() const