Store a single inspector stylesheet hidden from CSSOM.

third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp b/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
index 41c6734a7099b55b7b0fa70c881f565f1c1576a5..76bbe0d759b68a2fc92cd0c4b7ace7b3e7c4ce7d 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorStyleSheet.cpp
@@ -981,7 +981,9 @@ InspectorStyleSheet::InspectorStyleSheet(InspectorNetworkAgent* networkAgent, CS
     , m_documentURL(documentURL)
 {
     String text;
-    bool success = inlineStyleSheetText(&text);
+    bool success = inspectorStyleSheetText(&text);
+    if (!success)
+        success = inlineStyleSheetText(&text);
     if (!success)
         success = resourceStyleSheetText(&text);
     if (success)
@@ -1353,6 +1355,8 @@ void InspectorStyleSheet::innerSetText(const String& text, bool markAsLocallyMod
         Element* element = ownerStyleElement();
         if (element)
             m_resourceContainer->storeStyleElementContent(DOMNodeIds::idForNode(element), text);
+        else if (m_origin == protocol::CSS::StyleSheetOriginEnum::Inspector)
+            m_resourceContainer->storeStyleElementContent(DOMNodeIds::idForNode(m_pageStyleSheet->ownerDocument()), text);
         else
             m_resourceContainer->storeStyleSheetContent(finalURL(), text);
     }
@@ -1748,6 +1752,18 @@ bool InspectorStyleSheet::inlineStyleSheetText(String* result)
     return true;
 }
 
+bool InspectorStyleSheet::inspectorStyleSheetText(String* result)
+{
+    if (m_origin != protocol::CSS::StyleSheetOriginEnum::Inspector)
+        return false;
+    if (!m_pageStyleSheet->ownerDocument())
+        return false;
+    if (m_resourceContainer->loadStyleElementContent(DOMNodeIds::idForNode(m_pageStyleSheet->ownerDocument()), result))
+        return true;
+    *result = "";
+    return true;
+}
+
 InspectorStyleSheetForInlineStyle* InspectorStyleSheetForInlineStyle::create(Element* element, Listener* listener)
 {
     return new InspectorStyleSheetForInlineStyle(element, listener);