Generate inferred names for es6 class functions

Inferred names are currently generated for FunctionLiterals but not generated
for ClassLiterals. Without them, DevTools does not have enough information to
make descriptive descriptions.

E.g.
var x = {y: class{}};
var a = new x.y();
console.log(a);

This shows "Object{}" when it could be more descriptive "x.y {}"

BUG=v8:5621
CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel

Review-Url: https://codereview.chromium.org/2488193003
Cr-Commit-Position: refs/heads/master@{#41013}

src/parsing/parser.cc

@@ -3622,6 +3622,7 @@ Expression* Parser::RewriteClassLiteral(const AstRawString* name,
   }
   do_block->set_scope(scope()->FinalizeBlockScope());
   do_expr->set_represented_function(class_info->constructor);
+  AddFunctionForNameInference(class_info->constructor);
 
   return do_expr;
 }

test/cctest/test-func-name-inference.cc

@@ -141,6 +141,19 @@ TEST(LocalVar) {
   CheckFunctionName(script, "return 2", "fun2");
 }
 
+TEST(ObjectProperty) {
+  CcTest::InitializeVM();
+  v8::HandleScope scope(CcTest::isolate());
+
+  v8::Local<v8::Script> script =
+      Compile(CcTest::isolate(),
+              "var obj = {\n"
+              "  fun1: function() { return 1; },\n"
+              "  fun2: class { constructor() { return 2; } }\n"
+              "}");
+  CheckFunctionName(script, "return 1", "obj.fun1");
+  CheckFunctionName(script, "return 2", "obj.fun2");
+}
 
 TEST(InConstructor) {
   CcTest::InitializeVM();