LayoutTests: prepare test expectations for V8 change.

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 36b591ecbebb75ca089e3a6b5fd4d811b5016d1a..4f8e657b138623d05e6d8d15f4b7544c01528b68 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -941,6 +941,14 @@ crbug.com/498021 [ Linux ] fast/text/international/hindi-spacing.html [ Failure
 
 crbug.com/649159 imported/wpt/shadow-dom/slotchange-event.html [ Failure ]
 
+# TODO(yangguo): these tests need to be rebaselined after V8 change lands.
+crbug.com/666223 fast/workers/constructor-proto.html [ NeedsManualRebaseline ]
+crbug.com/666223 http/tests/w3c/webperf/approved/navigation-timing/html/idlharness.html [ NeedsManualRebaseline ]
+crbug.com/666223 imported/wpt/WebIDL/ecmascript-binding/es-exceptions/constructor-object.html [ NeedsManualRebaseline ]
+crbug.com/666223 imported/wpt/dom/interfaces.html [ NeedsManualRebaseline ]
+crbug.com/666223 inspector/sources/debugger-ui/watch-expressions-preserve-expansion.html [ NeedsManualRebaseline ]
+crbug.com/666223 virtual/sharedarraybuffer/fast/workers/constructor-proto.html [ NeedsManualRebaseline ]
+
 # These are the failing tests because Chrome hasn't implemented according to the spec.
 crbug.com/645988 imported/wpt/uievents/order-of-events/focus-events/focus-manual.html [ Failure ]