Merge experimental/a64 to bleeding_edge.

test/mjsunit/harmony/proxies.js

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-// Flags: --harmony-proxies
+// We change the stack size for the A64 simulator because at one point this test
+// enters an infinite recursion which goes through the runtime and we overflow
+// the system stack before the simulator stack.
+
+// Flags: --harmony-proxies --sim-stack-size=500
 
 
 // Helper.
 
 function TestWithProxies(test, x, y, z) {
   test(Proxy.create, x, y, z)
   test(function(h) {return Proxy.createFunction(h, function() {})}, x, y, z)
 }
 
 
@@ skipping 2252 matching lines @@
 
 function TestConstructorWithProxyPrototype2(create, handler) {
   function C() {};
   C.prototype = create(handler);
 
   var o = new C;
   assertSame(C.prototype, Object.getPrototypeOf(o));
 }
 
 TestConstructorWithProxyPrototype();