Revert of [DevTools] Remove edited scripts from debugger agent, move knowledge to frontend.

Source/core/inspector/PageDebuggerAgent.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 158 matching lines @@
 }
 
 void PageDebuggerAgent::didClearDocumentOfWindowObject(LocalFrame* frame)
 {
     // FIXME: what about nested objects?
     if (frame != m_pageAgent->inspectedFrame())
         return;
     reset();
 }
 
+void PageDebuggerAgent::didCommitLoadForLocalFrame(LocalFrame*)
+{
+    resetModifiedSources();
+}
+
 void PageDebuggerAgent::compileScript(ErrorString* errorString, const String& expression, const String& sourceURL, bool persistScript, const int* executionContextId, TypeBuilder::OptOutput<ScriptId>* scriptId, RefPtr<ExceptionDetails>& exceptionDetails)
 {
     InjectedScript injectedScript = injectedScriptForEval(errorString, executionContextId);
     if (injectedScript.isEmpty()) {
         *errorString = "Inspected frame has gone";
         return;
     }
     ExecutionContext* executionContext = injectedScript.scriptState()->executionContext();
     RefPtrWillBeRawPtr<LocalFrame> protect(toDocument(executionContext)->frame());
     InspectorDebuggerAgent::compileScript(errorString, expression, sourceURL, persistScript, executionContextId, scriptId, exceptionDetails);
@@ skipping 24 matching lines @@
     RefPtrWillBeRawPtr<LocalFrame> protect(frame);
     InspectorDebuggerAgent::runScript(errorString, scriptId, executionContextId, objectGroup, doNotPauseOnExceptionsAndMuteConsole, result, exceptionDetails);
 
     if (frame)
         InspectorInstrumentation::didEvaluateScript(cookie);
     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", TRACE_EVENT_SCOPE_THREAD, "data", InspectorUpdateCountersEvent::data());
 
 }
 
 } // namespace blink