DevTools: Disable sourceUrl and SourceMappingUrl deprecation warnings for a few releases.

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 889 matching lines @@
     if (url.isEmpty())
         return String();
     Frame* frame = mainFrame();
     if (!frame)
         return String();
     CachedResource* resource = cachedResource(frame, KURL(ParsedURLString, url));
     if (!resource)
         return String();
     String deprecatedHeaderSourceMapURL = resource->response().httpHeaderField(deprecatedSourceMapHttpHeader);
     if (!deprecatedHeaderSourceMapURL.isEmpty()) {
-        m_page->console()->addMessage(NetworkMessageSource, WarningMessageLevel, "Resource is served with deprecated header X-SourceMap, SourceMap should be used instead.", url, 0);
+        // FIXME: add deprecated console message here.
         return deprecatedHeaderSourceMapURL;
     }
     return resource->response().httpHeaderField(sourceMapHttpHeader);
 }
 
 // static
 DocumentLoader* InspectorPageAgent::assertDocumentLoader(ErrorString* errorString, Frame* frame)
 {
     FrameLoader* frameLoader = frame->loader();
     DocumentLoader* documentLoader = frameLoader ? frameLoader->documentLoader() : 0;
@@ skipping 349 matching lines @@
 }
 
 void InspectorPageAgent::setShowViewportSizeOnResize(ErrorString*, bool show, const bool* showGrid)
 {
     m_state->setBoolean(PageAgentState::showSizeOnResize, show);
     m_state->setBoolean(PageAgentState::showGridOnResize, showGrid && *showGrid);
 }
 
 } // namespace WebCore