deps: update V8 to 5.1.281.69

Pick up the latest branch-head for V8 5.1. This branch brings in
improved language support and performance improvements. For full
details: http://v8project.blogspot.com/2016/04/v8-release-51.html

* Picks up the latest branch head for 5.1 [1]
* Edit v8 gitignore to allow trace_event copy
* Update V8 DEP trace_event as per deps/v8/DEPS [2]

[1] https://chromium.googlesource.com/v8/v8.git/+/dc81244
[2] https://chromium.googlesource.com/chromium/src/base/trace_event/common/+/c8c8665

PR-URL: https://github.com/nodejs/node/pull/7016
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 4 insertions, 4 deletions

diff --git a/deps/v8/test/cctest/test-dictionary.cc b/deps/v8/test/cctest/test-dictionary.cc
index 0d4edf5dd4..cc4a7533d8 100644
--- a/deps/v8/test/cctest/test-dictionary.cc
+++ b/deps/v8/test/cctest/test-dictionary.cc
@@ -82,7 +82,7 @@ static void TestHashMap(Handle<HashMap> table) {
     CHECK_EQ(table->NumberOfElements(), i + 1);
     CHECK_NE(table->FindEntry(key), HashMap::kNotFound);
     CHECK_EQ(table->Lookup(key), *value);
-    CHECK(key->GetIdentityHash()->IsSmi());
+    CHECK(JSReceiver::GetIdentityHash(isolate, key)->IsSmi());
   }
 
   // Keys never added to the map which already have an identity hash
@@ -92,7 +92,7 @@ static void TestHashMap(Handle<HashMap> table) {
     CHECK(JSReceiver::GetOrCreateIdentityHash(key)->IsSmi());
     CHECK_EQ(table->FindEntry(key), HashMap::kNotFound);
     CHECK_EQ(table->Lookup(key), CcTest::heap()->the_hole_value());
-    CHECK(key->GetIdentityHash()->IsSmi());
+    CHECK(JSReceiver::GetIdentityHash(isolate, key)->IsSmi());
   }
 
   // Keys that don't have an identity hash should not be found and also
@@ -100,8 +100,8 @@ static void TestHashMap(Handle<HashMap> table) {
   for (int i = 0; i < 100; i++) {
     Handle<JSReceiver> key = factory->NewJSArray(7);
     CHECK_EQ(table->Lookup(key), CcTest::heap()->the_hole_value());
-    Object* identity_hash = key->GetIdentityHash();
-    CHECK_EQ(identity_hash, CcTest::heap()->undefined_value());
+    Handle<Object> identity_hash = JSReceiver::GetIdentityHash(isolate, key);
+    CHECK_EQ(CcTest::heap()->undefined_value(), *identity_hash);
   }
 }