Add trace event Pepper API

ppapi/shared_impl/ppb_trace_event_shared.h

Index: ppapi/shared_impl/ppb_trace_event_shared.h
diff --git a/ppapi/shared_impl/ppb_trace_event_shared.h b/ppapi/shared_impl/ppb_trace_event_shared.h
new file mode 100644
index 0000000000000000000000000000000000000000..80710651c6417e3d93905f1bca4990af84d718e2
--- /dev/null
+++ b/ppapi/shared_impl/ppb_trace_event_shared.h
@@ -0,0 +1,38 @@
+// 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.
+
+#ifndef PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_SHARED_H_
+#define PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_SHARED_H_
+
+#include "ppapi/c/dev/ppb_trace_event_dev.h"
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/shared_impl/ppapi_shared_export.h"
+
+namespace ppapi {
+
+// Contains the implementation of the trace_event functions that are
+// shared between the proxy and Chrome's implementation. Since these functions
+// are to be run from whatever plugin process/thread in which they originated,
+// the implementation lives in shared_impl.
+//
+class PPAPI_SHARED_EXPORT PPB_Trace_Event_Shared {
+ public:
+  static void* GetCategoryEnabled(const char* category_name);
+  static int32_t AddTraceEvent(int8_t phase,
+                               const void* category_enabled,
+                               const char* name,
+                               uint64_t id,
+                               uint32_t num_args,
+                               const char* arg_names[],
+                               const uint8_t arg_types[],
+                               const uint64_t arg_values[],
+                               int32_t threshold_begin_id,
+                               int64_t threshold,
+                               uint8_t flags);
+  static void SetThreadName(const char* thread_name);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_SHARED_IMPL_PPB_TRACE_EVENT_SHARED_H_