Redesign TabBase to get rid of mandatory inheritance of dialog element interfaces

plugins/org.chromium.debug.ui/src/org/chromium/debug/ui/launcher/ScriptMappingTab.java

 // Copyright (c) 2012 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.launcher;
 
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
@@ skipping 344 matching lines @@
   protected MessageData isValidImpl(ILaunchConfiguration config) {
     try {
       LaunchParams.PredefinedSourceWrapperIds.resolveEntries(config);
     } catch (CoreException e) {
       return new MessageData(false,
           NLS.bind(Messages.ScriptMappingTab_UNRESOLVED_ERROR_MESSAGE, e.getMessage()));
     }
     return null;
   }
 
-  protected List<? extends TabField<?, ?, Elements, Params>> getTabFields() {
+  protected TabFieldList<Elements, Params> getTabFields() {
     return TAB_FIELDS;
   }
 
-  static final List<? extends TabField<?, ?, Elements, Params>> TAB_FIELDS;
+  static final TabFieldList<Elements, Params> TAB_FIELDS;
   static {
     List<TabField<?, ?, Elements, Params>> list =
         new ArrayList<ChromiumRemoteTab.TabField<?, ?, Elements, Params>>(4);
 
     list.add(new TabField<String, LookupMode, Elements, Params>(
         LaunchParams.SOURCE_LOOKUP_MODE, TypedMethods.STRING,
         new FieldAccess<LookupMode, Elements>() {
           @Override
           void setValue(LookupMode value, Elements tabElements) {
             tabElements.getLookupMode().select(value);
@@ skipping 40 matching lines @@
               result = new ArrayList<String>(
                   IPredefinedSourceWrapProvider.Access.getEntries().keySet());
             } else {
               result = Collections.emptyList();
             }
             return result;
           }
         },
         LaunchParams.PredefinedSourceWrapperIds.CONVERTER));
 
-    TAB_FIELDS = Collections.unmodifiableList(list);
+    TAB_FIELDS = createFieldListImpl(list);
   }
 }