MemoryCache: Enable MemoryCache to have multiple isolated resource maps

Source/core/inspector/InspectorPageAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 329 matching lines @@
     if (!cachedResource) {
         Vector<Document*> allImports = InspectorPageAgent::importsForFrame(frame);
         for (Vector<Document*>::const_iterator it = allImports.begin(); it != allImports.end(); ++it) {
             Document* import = *it;
             cachedResource = import->fetcher()->cachedResource(url);
             if (cachedResource)
                 break;
         }
     }
     if (!cachedResource)
-        cachedResource = memoryCache()->resourceForURL(url);
+        cachedResource = memoryCache()->resourceForURL(url, document->fetcher()->getCacheIdentifier());
     return cachedResource;
 }
 
 TypeBuilder::Page::ResourceType::Enum InspectorPageAgent::resourceTypeJson(InspectorPageAgent::ResourceType resourceType)
 {
     switch (resourceType) {
     case DocumentResource:
         return TypeBuilder::Page::ResourceType::Document;
     case FontResource:
         return TypeBuilder::Page::ResourceType::Font;
@@ skipping 1137 matching lines @@
 void InspectorPageAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     visitor->trace(m_injectedScriptManager);
     visitor->trace(m_inspectorResourceContentLoader);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink