Upgrade V8 to 8.8.278.14

Bug: 162604069
Bug: 167389063
Test: gts-tradefed run gts-dev --module GtsGmscoreHostTestCases
      --test com.google.android.gts.devicepolicy.DeviceOwnerTest#testProxyPacProxyTest
Test: m -j proxy_resolver_v8_unittest && adb sync && adb shell \
      /data/nativetest/proxy_resolver_v8_unittest/proxy_resolver_v8_unittest

Merged-In: Ifb09923b9d7f6d8990fb062d7dc0294edf2c098e
Change-Id: Ifb09923b9d7f6d8990fb062d7dc0294edf2c098e
(cherry picked from commit 9580a23bc5b8874a0979001d3595d027cbb68128)
diff --git a/src/builtins/builtins-async-gen.h b/src/builtins/builtins-async-gen.h
new file mode 100644
index 0000000..833e78d
--- /dev/null
+++ b/src/builtins/builtins-async-gen.h
@@ -0,0 +1,70 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_BUILTINS_BUILTINS_ASYNC_GEN_H_
+#define V8_BUILTINS_BUILTINS_ASYNC_GEN_H_
+
+#include "src/builtins/builtins-promise-gen.h"
+
+namespace v8 {
+namespace internal {
+
+class AsyncBuiltinsAssembler : public PromiseBuiltinsAssembler {
+ public:
+  explicit AsyncBuiltinsAssembler(compiler::CodeAssemblerState* state)
+      : PromiseBuiltinsAssembler(state) {}
+
+ protected:
+  // Perform steps to resume generator after `value` is resolved.
+  // `on_reject` is the SharedFunctioninfo instance used to create the reject
+  // closure. `on_resolve` is the SharedFunctioninfo instance used to create the
+  // resolve closure. Returns the Promise-wrapped `value`.
+  TNode<Object> Await(TNode<Context> context,
+                      TNode<JSGeneratorObject> generator, TNode<Object> value,
+                      TNode<JSPromise> outer_promise,
+                      TNode<SharedFunctionInfo> on_resolve_sfi,
+                      TNode<SharedFunctionInfo> on_reject_sfi,
+                      TNode<Oddball> is_predicted_as_caught);
+  TNode<Object> Await(TNode<Context> context,
+                      TNode<JSGeneratorObject> generator, TNode<Object> value,
+                      TNode<JSPromise> outer_promise,
+                      TNode<SharedFunctionInfo> on_resolve_sfi,
+                      TNode<SharedFunctionInfo> on_reject_sfi,
+                      bool is_predicted_as_caught) {
+    return Await(context, generator, value, outer_promise, on_resolve_sfi,
+                 on_reject_sfi, BooleanConstant(is_predicted_as_caught));
+  }
+
+  // Return a new built-in function object as defined in
+  // Async Iterator Value Unwrap Functions
+  TNode<JSFunction> CreateUnwrapClosure(TNode<NativeContext> native_context,
+                                        TNode<Oddball> done);
+
+ private:
+  void InitializeNativeClosure(TNode<Context> context,
+                               TNode<NativeContext> native_context,
+                               TNode<HeapObject> function,
+                               TNode<SharedFunctionInfo> shared_info);
+  TNode<Context> AllocateAsyncIteratorValueUnwrapContext(
+      TNode<NativeContext> native_context, TNode<Oddball> done);
+
+  TNode<Object> AwaitOld(TNode<Context> context,
+                         TNode<JSGeneratorObject> generator,
+                         TNode<Object> value, TNode<JSPromise> outer_promise,
+                         TNode<SharedFunctionInfo> on_resolve_sfi,
+                         TNode<SharedFunctionInfo> on_reject_sfi,
+                         TNode<Oddball> is_predicted_as_caught);
+  TNode<Object> AwaitOptimized(TNode<Context> context,
+                               TNode<JSGeneratorObject> generator,
+                               TNode<JSPromise> promise,
+                               TNode<JSPromise> outer_promise,
+                               TNode<SharedFunctionInfo> on_resolve_sfi,
+                               TNode<SharedFunctionInfo> on_reject_sfi,
+                               TNode<Oddball> is_predicted_as_caught);
+};
+
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_BUILTINS_BUILTINS_ASYNC_GEN_H_