Revert 175233 because Linux ASAN builder cannot compile it.

ppapi/shared_impl/ppb_trace_event_impl.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 "ppapi/shared_impl/ppb_trace_event_impl.h"
-
-#include "base/debug/trace_event.h"
-#include "ppapi/thunk/thunk.h"
-
-
-namespace ppapi {
-
-// PPB_Trace_Event_Dev is a shared implementation because Trace Events can be
-// sent from either the plugin process or renderer process depending on whether
-// the plugin is in- or out-of-process.  Also, for NaCl plugins these functions
-// will be executed from untrusted code and handled appropriately by tracing
-// functionality in the IRT.
-
-// static
-void* TraceEventImpl::GetCategoryEnabled(const char* category_name) {
-  // This casting is here because all mem_t return types in Pepper are void* and
-  // non-const.  All mem_t parameters are const void* so there is no way to
-  // return a pointer type to the caller without some const_cast.  The pointer
-  // type the tracing system works with is normally unsigned char*.
-  return const_cast<void*>(static_cast<const void*>(
-      base::debug::TraceLog::GetInstance()->GetCategoryEnabled(category_name)));
-}
-
-// static
-void TraceEventImpl::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[],
-                                      uint8_t flags) {
-  base::debug::TraceLog::GetInstance()->AddTraceEvent(phase,
-      static_cast<const unsigned char*>(category_enabled), name, id, num_args,
-      arg_names, arg_types,
-      // This cast is necessary for LP64 systems, where uint64_t is defined as
-      // an unsigned long int, but trace_event internals are hermetic and
-      // accepts an |unsigned long long*|.  The pointer types are compatible but
-      // the compiler throws an error without an explicit cast.
-      reinterpret_cast<const unsigned long long*>(arg_values), flags);
-}
-
-// static
-void TraceEventImpl::SetThreadName(const char* thread_name) {
-  base::PlatformThread::SetName(thread_name);
-}
-
-namespace {
-
-const PPB_Trace_Event_Dev g_ppb_trace_event_thunk = {
-  &TraceEventImpl::GetCategoryEnabled,
-  &TraceEventImpl::AddTraceEvent,
-  &TraceEventImpl::SetThreadName,
-};
-
-}  // namespace ppapi
-
-}  // namespace
-
-namespace ppapi {
-namespace thunk {
-
-const PPB_Trace_Event_Dev_0_1* GetPPB_Trace_Event_Dev_0_1_Thunk() {
-  return &g_ppb_trace_event_thunk;
-}
-
-}  // namespace thunk
-}  // namespace ppapi