[debug] add more tests for break points for builtin constructors.

This has been made possible when custom builtin constructors were
removed.

R=jgruber@chromium.org

Bug: v8:178, v8:7518
Change-Id: I7ee064c3b899732ebe9381ea004f231fa6c0cef0
Reviewed-on: https://chromium-review.googlesource.com/975541
Commit-Queue: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52229}

test/cctest/test-debug.cc

@@ -1149,7 +1149,7 @@ TEST(BreakPointConstructorBuiltin) {
   v8::Local<v8::Function> builtin;
   i::Handle<i::BreakPoint> bp;
 
-  // === Test constructor builtin (for ones with normal construct stubs) ===
+  // === Test Promise constructor ===
   break_point_hit_count = 0;
   builtin = CompileRun("Promise").As<v8::Function>();
   ExpectString("(new Promise(()=>{})).toString()", "[object Promise]");
@@ -1165,6 +1165,38 @@ TEST(BreakPointConstructorBuiltin) {
   ExpectString("(new Promise(()=>{})).toString()", "[object Promise]");
   CHECK_EQ(1, break_point_hit_count);
 
+  // === Test Object constructor ===
+  break_point_hit_count = 0;
+  builtin = CompileRun("Object").As<v8::Function>();
+  CompileRun("new Object()");
+  CHECK_EQ(0, break_point_hit_count);
+
+  // Run with breakpoint.
+  bp = SetBreakPoint(builtin, 0);
+  CompileRun("new Object()");
+  CHECK_EQ(1, break_point_hit_count);
+
+  // Run without breakpoints.
+  ClearBreakPoint(bp);
+  CompileRun("new Object()");
+  CHECK_EQ(1, break_point_hit_count);
+
+  // === Test Number constructor ===
+  break_point_hit_count = 0;
+  builtin = CompileRun("Number").As<v8::Function>();
+  CompileRun("new Number()");
+  CHECK_EQ(0, break_point_hit_count);
+
+  // Run with breakpoint.
+  bp = SetBreakPoint(builtin, 0);
+  CompileRun("new Number()");
+  CHECK_EQ(1, break_point_hit_count);
+
+  // Run without breakpoints.
+  ClearBreakPoint(bp);
+  CompileRun("new Number()");
+  CHECK_EQ(1, break_point_hit_count);
+
   SetDebugEventListener(env->GetIsolate(), nullptr);
   CheckDebuggerUnloaded();
 }