Make base::Logging compile with the NaCl toolchain.

base/rand_util_nacl.cc

+// Copyright (c) 2012 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 "base/rand_util.h"
+#include "base/rand_util_c.h"
+
+#include "base/lazy_instance.h"
+#include "base/logging.h"
+
+// TODO(bbudge) Replace this with a proper system header file when NaCl
+// provides one.
+#include "native_client/src/untrusted/irt/irt.h"
+
+namespace {
+
+// Create a wrapper class so we can cache the NaCl random number interface.
+class URandomInterface {
+ public:
+  URandomInterface() {
+    size_t result = nacl_interface_query(NACL_IRT_RANDOM_v0_1,
+                                         &interface_,
+                                         sizeof(interface_));
+    DCHECK_EQ(result, sizeof(interface_)) << "Can't get random interface.";
+  }
+
+  uint64 get_random_bytes() const {
+    size_t nbytes;
+    uint64 result;
+    int error = interface_.get_random_bytes(&result,
+                                            sizeof(result),
+                                            &nbytes);
+    DCHECK_EQ(error, 0);
+    DCHECK_EQ(nbytes, sizeof(result));
+    return result;
+  }
+
+ private:
+  struct nacl_irt_random interface_;
+};
+
+base::LazyInstance<URandomInterface> g_urandom_interface =
+    LAZY_INSTANCE_INITIALIZER;
+
+}  // namespace
+
+namespace base {
+
+uint64 RandUint64() {
+  return g_urandom_interface.Pointer()->get_random_bytes();
+}
+
+}  // namespace base
+