Update //base to chromium 9659b08ea5a34f889dc4166217f438095ddc10d2

base/android/cxa_demangle_stub.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <unistd.h>
+
+// LLVM's demangler is large, and we have no need of it.  Overriding it with
+// our own stub version here stops a lot of code being pulled in from libc++.
+// More here:
+//   https://llvm.org/svn/llvm-project/libcxxabi/trunk/src/cxa_demangle.cpp
+extern "C" char* __cxa_demangle(const char* mangled_name,
+                                char* buf,
+                                size_t* n,
+                                int* status) {
+  static const int kMemoryAllocFailure = -1;  // LLVM's memory_alloc_failure.
+  if (status)
+    *status = kMemoryAllocFailure;
+  return nullptr;
+}