Merge 97702 - Web Inspector: Search in resource crashes when there is no resource with given url.

Source/WebCore/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 485 matching lines @@
     if (!loader)
         return;
 
     String content;
     bool success = false;
     if (equalIgnoringFragmentIdentifier(kurl, loader->url()))
         success = mainResourceContent(frame, false, &content);
 
     if (!success) {
         CachedResource* resource = cachedResource(frame, kurl);
-        success = textContentForCachedResource(resource, &content);
+        if (resource)
+            success = textContentForCachedResource(resource, &content);
     }
 
     if (!success)
         return;
 
     *results = ContentSearchUtils::searchInTextByLines(query, content);
 }
 
 static PassRefPtr<InspectorObject> buildObjectForSearchResult(const String& frameId, const String& url, int matchesCount)
 {
@@ skipping 163 matching lines @@
             result->setArray("childFrames", childrenArray);
         }
         childrenArray->pushObject(buildObjectForFrameTree(child));
     }
     return result;
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(INSPECTOR)