Non-Oilpan Memory: Fix HTMLViewSourceDocument and WebLeakDetector.

Source/web/WebLeakDetector.cpp

 /*
  * Copyright (C) 2014 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 85 matching lines @@
         RefPtrWillBeRawPtr<Document> document = PassRefPtrWillBeRawPtr<Document>(frame->document());
         if (ResourceFetcher* fetcher = document->fetcher())
             fetcher->garbageCollectDocumentResources();
     }
 
     // FIXME: HTML5 Notification should be closed because notification affects the result of number of DOM objects.
 
     V8GCController::collectAllGarbageForTesting(isolate);
     // Note: Oilpan precise GC is scheduled at the end of the event loop.
 
+    V8PerIsolateData::from(isolate)->clearScriptRegexpContext();
+
     // Task queue may contain delayed object destruction tasks.
     // This method is called from navigation hook inside FrameLoader,
     // so previous document is still held by the loader until the next event loop.
     // Complete all pending tasks before proceeding to gc.
     m_numberOfGCNeeded = 2;
     m_delayedGCAndReportTimer.startOneShot(0, FROM_HERE);
 }
 
 void WebLeakDetectorImpl::delayedGCAndReport(Timer<WebLeakDetectorImpl>*)
 {
@@ skipping 34 matching lines @@
 }
 
 } // namespace
 
 WebLeakDetector* WebLeakDetector::create(WebLeakDetectorClient* client)
 {
     return new WebLeakDetectorImpl(client);
 }
 
 } // namespace blink