Pass current value of attributes to WebDOMActivityLogger Setter logs.

Source/bindings/tests/idls/TestObject.idl

 /*
  * Copyright (C) 2013 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
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     [TreatNullAs=NullString] attribute DOMString treatNullAsNullStringStringAttribute;
     [TreatReturnedNullStringAs=Null] attribute DOMString treatReturnedNullStringAsNullStringAttribute;
     [TreatReturnedNullStringAs=Undefined] attribute DOMString treatReturnedNullStringAsUndefinedStringAttribute;
     [TypeChecking=Interface|Nullable] attribute float typeCheckingInterfaceNullableStringFloatAttribute; // nop for non-interface types
     [TypeChecking=Interface] attribute TestInterface typeCheckingInterfaceTestInterfaceAttribute;
     [TypeChecking=Nullable] attribute TestInterface? typeCheckingNullableTestInterfaceOrNullAttribute;
     [TypeChecking=Interface|Nullable] attribute TestInterface? typeCheckingInterfaceNullableTestInterfaceOrNullAttribute;
     [Reflect, URL] attribute DOMString urlStringAttribute;
     [Reflect=reflectUrlAttribute, URL] attribute DOMString urlStringAttribute;
     [Unforgeable] attribute long unforgeableLongAttribute;
+    [LogActivity=SetterOnly, LogPreviousValue] attribute long activityLoggingSetterOnlyLogPreviousValueAttribute;
+    [LogActivity, LogPreviousValue] attribute TestInterfaceEmpty activityLoggingLogPreviousValueInterfaceAttribute;
 
 
     // Methods
     //
     // Naming convention:
     // ReturnType returnTypeMethodTypeName1ArgTypeName2Arg(Type1 typeName1Arg, Type2 typeName2Arg);
     // E.g.,
     // void voidMethodStringArgLongArrayArg(DOMString stringArg, long[] longArrayArg);
     void voidMethod();
     static void staticVoidMethod();
@@ skipping 236 matching lines @@
     void voidMethodTestInterfaceWillBeGarbageCollectedArrayArg(TestInterfaceWillBeGarbageCollected[] testInterfaceWillBeGarbageCollectedArrayArg);
 
     // Extended attributes on referenced interfaces
     // (not self; self-reference tests at interface themselves)
     attribute TestInterface testInterfaceAttribute; // [ImplementedAs]
     attribute TestInterfaceGarbageCollected testInterfaceGarbageCollectedAttribute; // [GarbageCollected]
     attribute TestInterfaceGarbageCollected? testInterfaceGarbageCollectedOrNullAttribute; // [GarbageCollected]
     attribute TestInterfaceWillBeGarbageCollected testInterfaceWillBeGarbageCollectedAttribute; // [WillBeGarbageCollected]
     attribute TestInterfaceWillBeGarbageCollected? testInterfaceWillBeGarbageCollectedOrNullAttribute; // [WillBeGarbageCollected]
 };