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

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index e41e0f8c0adbd6dcee9a50a2004aeb3dbddeb0c7..ee00ba7faa9dd3eb5f4112ffa93099de8ed7d5f0 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -621,7 +621,10 @@
     ScriptsMap::iterator it = m_scripts.find(scriptId);
     if (it == m_scripts.end())
         return;
-    it->value.setSource(newContent);
+    String url = it->value.url();
+    if (url.isEmpty())
+        return;
+    m_editedScripts.set(url, newContent);
 }
 
 void InspectorDebuggerAgent::restartFrame(ErrorString* errorString, const String& callFrameId, RefPtr<Array<CallFrame> >& newCallFrames, RefPtr<JSONObject>& result, RefPtr<StackTrace>& asyncStackTrace)
@@ -653,6 +656,10 @@
         *error = "No script for id: " + scriptId;
         return;
     }
+
+    String url = it->value.url();
+    if (!url.isEmpty() && getEditedScript(url, scriptSource))
+        return;
     *scriptSource = it->value.source();
 }
 
@@ -1419,6 +1426,14 @@
                 m_skipNextDebuggerStepOut = true;
         }
     }
+}
+
+bool InspectorDebuggerAgent::getEditedScript(const String& url, String* content)
+{
+    if (!m_editedScripts.contains(url))
+        return false;
+    *content = m_editedScripts.get(url);
+    return true;
 }
 
 PassRefPtr<Array<CallFrame> > InspectorDebuggerAgent::currentCallFrames()
@@ -1716,6 +1731,11 @@
         frontend()->globalObjectCleared();
 }
 
+void InspectorDebuggerAgent::resetModifiedSources()
+{
+    m_editedScripts.clear();
+}
+
 DEFINE_TRACE(InspectorDebuggerAgent)
 {
 #if ENABLE(OILPAN)