Change source look-up design

plugins/org.chromium.debug.ui/src/org/chromium/debug/ui/actions/PushChangesAction.java

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.debug.ui.actions;
 
 import java.io.IOException;
+import java.util.Collection;
 import java.util.List;
 
 import org.chromium.debug.core.ChromiumDebugPlugin;
+import org.chromium.debug.core.model.VmResource;
+import org.chromium.debug.core.model.VmResource.ScriptHolder;
 import org.chromium.debug.core.util.ChromiumDebugPluginUtil;
 import org.chromium.debug.core.util.ScriptTargetMapping;
 import org.chromium.debug.ui.liveedit.LiveEditDiffViewer;
 import org.chromium.debug.ui.liveedit.LiveEditResultDialog;
 import org.chromium.sdk.Script;
 import org.chromium.sdk.SyncCallback;
 import org.chromium.sdk.UpdatableScript;
 import org.chromium.sdk.UpdatableScript.ChangeDescription;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IStatus;
@@ skipping 32 matching lines @@
             dialog.open();
           }
         });
       }
     };
     execute(filePair, callback, null, false);
   }
 
   public static void execute(final ScriptTargetMapping filePair,
       UpdatableScript.UpdateCallback callback, SyncCallback syncCallback, boolean previewOnly) {
-    Script script = filePair.getScriptHolder().getSingleScript();
-
+    // TODO: fix the rough behavior (inside this call).
+    Script script = filePair.getSingleScript();
     byte[] fileData;
     try {
       fileData = ChromiumDebugPluginUtil.readFileContents(filePair.getFile());
     } catch (IOException e) {
       throw new RuntimeException(e);
     } catch (CoreException e) {
       throw new RuntimeException(e);
     }
 
     // We are using default charset here like usually.
     String newSource = new String(fileData);
 
     if (previewOnly) {
       script.previewSetSource(newSource, callback, syncCallback);
     } else {
       script.setSourceOnRemote(newSource, callback, syncCallback);
     }
   }
 }