Update V8 to r5214 as required by WebKit r65072.

Change-Id: I387277a00cc0949597c0f69a8e4f2da60213c8f2
diff --git a/test/mjsunit/debug-enable-disable-breakpoints.js b/test/mjsunit/debug-enable-disable-breakpoints.js
index 071397b..4592ffc 100644
--- a/test/mjsunit/debug-enable-disable-breakpoints.js
+++ b/test/mjsunit/debug-enable-disable-breakpoints.js
@@ -88,3 +88,18 @@
 Debug.disableBreakPoint(bp1);
 f();
 assertEquals(6, break_point_hit_count);
+
+// Deactivate all breakpoints.
+Debug.debuggerFlags().breakPointsActive.setValue(false);
+f();
+assertEquals(6, break_point_hit_count);
+
+// Enable the first breakpoint.
+Debug.enableBreakPoint(bp1);
+f();
+assertEquals(6, break_point_hit_count);
+
+// Activate all breakpoints.
+Debug.debuggerFlags().breakPointsActive.setValue(true);
+f();
+assertEquals(7, break_point_hit_count);