Add UMA private PPAPI interface for UMA logging from NaCl plugin

ppapi/tests/test_uma.cc

+// Copyright (c) 2011 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 "ppapi/tests/test_uma.h"
+
+#include "ppapi/c/private/ppb_uma_private.h"
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/tests/testing_instance.h"
+
+REGISTER_TEST_CASE(UMA);
+
+bool TestUMA::Init() {
+  uma_interface_ = reinterpret_cast<PPB_UMA_Private const*>(
+      pp::Module::Get()->GetBrowserInterface(PPB_UMA_PRIVATE_INTERFACE));
+  return !!uma_interface_;
+}
+
+void TestUMA::RunTest() {
+  instance_->LogTest("Count", TestCount());
+  instance_->LogTest("Time", TestTime());
+  instance_->LogTest("Enum", TestEnum());
+}
+
+std::string TestUMA::TestCount() {
+  pp::Var name_var = pp::Var("Test.CountHistogram");
+  PP_Var name = name_var.pp_var();
+  uma_interface_->HistogramCustomCounts(name, 10, 1, 100, 50);
+  uma_interface_->HistogramCustomCounts(name, 30, 1, 100, 50);
+  uma_interface_->HistogramCustomCounts(name, 20, 1, 100, 50);
+  uma_interface_->HistogramCustomCounts(name, 40, 1, 100, 50);
+  PASS();
+}
+
+std::string TestUMA::TestTime() {
+  pp::Var name_var = pp::Var("Test.TimeHistogram");
+  PP_Var name = name_var.pp_var();
+  uma_interface_->HistogramCustomTimes(name, 100, 1, 10000, 50);
+  uma_interface_->HistogramCustomTimes(name, 1000, 1, 10000, 50);
+  uma_interface_->HistogramCustomTimes(name, 5000, 1, 10000, 50);
+  uma_interface_->HistogramCustomTimes(name, 10, 1, 10000, 50);
+  PASS();
+}
+
+std::string TestUMA::TestEnum() {
+  pp::Var name_var = pp::Var("Test.EnumHistogram");
+  PP_Var name = name_var.pp_var();
+  uma_interface_->HistogramEnumeration(name, 0, 5);
+  uma_interface_->HistogramEnumeration(name, 3, 5);
+  uma_interface_->HistogramEnumeration(name, 3, 5);
+  uma_interface_->HistogramEnumeration(name, 1, 5);
+  uma_interface_->HistogramEnumeration(name, 2, 5);
+  PASS();
+}
+