Add events with custom timestamps and thread id to PPAPI dev tracing interface.

ppapi/tests/test_trace_event.cc

Index: ppapi/tests/test_trace_event.cc
diff --git a/ppapi/tests/test_trace_event.cc b/ppapi/tests/test_trace_event.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c8d68455d942f2cee5e566021bc1c8dd6950a75a
--- /dev/null
+++ b/ppapi/tests/test_trace_event.cc
@@ -0,0 +1,65 @@
+// Copyright (c) 2013 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_trace_event.h"
+
+#include "ppapi/cpp/module.h"
+#include "ppapi/tests/testing_instance.h"
+
+REGISTER_TEST_CASE(TraceEvent);
+
+TestTraceEvent::TestTraceEvent(TestingInstance* instance)
+    : TestCase(instance),
+      interface_(NULL) {
+}
+
+bool TestTraceEvent::Init() {
+  interface_ = static_cast<const PPB_Trace_Event_Dev*>(
+      pp::Module::Get()->GetBrowserInterface(PPB_TRACE_EVENT_DEV_INTERFACE));
+  return !!interface_;
+}
+
+void TestTraceEvent::RunTests(const std::string& filter) {
+  RUN_TEST(Smoke, filter);
+  RUN_TEST(SmokeWithTimestamps, filter);
+  RUN_TEST(Clock, filter);
+}
+
+std::string TestTraceEvent::TestSmoke() {
+  // This test does not verify the log message actually reaches dev tracing, but
+  // it does test that the interface exists and that it can be called without
+  // crashing.
+  const void* cat_enabled = interface_->GetCategoryEnabled("bar");
+  interface_->AddTraceEvent('B', cat_enabled, "foo", 0, 0, NULL, NULL, NULL, 0);
+  interface_->AddTraceEvent('E', cat_enabled, "foo", 0, 0, NULL, NULL, NULL, 0);
+  PASS();
+}
+
+std::string TestTraceEvent::TestSmokeWithTimestamps() {
+  // This test does not verify the log message actually reaches dev tracing, but
+  // it does test that the interface exists and that it can be called without
+  // crashing.
+  const void* cat_enabled = interface_->GetCategoryEnabled("bar");
+  interface_->AddTraceEventWithThreadIdAndTimestamp(
+    'B', cat_enabled, "foo", 0, 0, 42, 0, NULL, NULL, NULL, 0);
+  interface_->AddTraceEventWithThreadIdAndTimestamp(
+    'B', cat_enabled, "foo", 0, 1, 43, 0, NULL, NULL, NULL, 0);
+  interface_->AddTraceEventWithThreadIdAndTimestamp(
+    'E', cat_enabled, "foo", 0, 0, 44, 0, NULL, NULL, NULL, 0);
+  interface_->AddTraceEventWithThreadIdAndTimestamp(
+    'E', cat_enabled, "foo", 0, 1, 45, 0, NULL, NULL, NULL, 0);
+  PASS();
+}
+
+std::string TestTraceEvent::TestClock() {
+  int64_t last = interface_->Now();
+
+  for(int i=0; i<5; ++i){
+    int64_t next = interface_->Now();
+    ASSERT_LE(last, next);
+    last = next;
+  }
+
+  PASS();
+}