Deleted OS_WIN and all Windows specific files from base.

base/trace_event/trace_event_impl.cc

Index: base/trace_event/trace_event_impl.cc
diff --git a/base/trace_event/trace_event_impl.cc b/base/trace_event/trace_event_impl.cc
index 3d58d873ad52552cf7473e04c3bf505b7bb9cee2..d97365a3d894e4f86bf7c068a17adaeebc53d4b9 100644
--- a/base/trace_event/trace_event_impl.cc
+++ b/base/trace_event/trace_event_impl.cc
@@ -36,11 +36,6 @@
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_synthetic_delay.h"
 
-#if defined(OS_WIN)
-#include "base/trace_event/trace_event_etw_export_win.h"
-#include "base/trace_event/trace_event_win.h"
-#endif
-
 class DeleteTraceLogForTesting {
  public:
   static void Delete() {
@@ -1238,11 +1233,6 @@ void TraceLog::UpdateCategoryGroupEnabledFlag(size_t category_index) {
   if (event_callback_ &&
       event_callback_trace_config_.IsCategoryGroupEnabled(category_group))
     enabled_flag |= ENABLED_FOR_EVENT_CALLBACK;
-#if defined(OS_WIN)
-  if (base::trace_event::TraceEventETWExport::isETWExportEnabled())
-    enabled_flag |= ENABLED_FOR_ETW_EXPORT;
-#endif
-
   g_category_group_enabled[category_index] = enabled_flag;
 }
 
@@ -1941,15 +1931,6 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
     }
   }
 
-#if defined(OS_WIN)
-  // This is done sooner rather than later, to avoid creating the event and
-  // acquiring the lock, which is not needed for ETW as it's already threadsafe.
-  if (*category_group_enabled & ENABLED_FOR_ETW_EXPORT)
-    TraceEventETWExport::AddEvent(phase, category_group_enabled, name, id,
-                                  num_args, arg_names, arg_types, arg_values,
-                                  convertable_values);
-#endif  // OS_WIN
-
   std::string console_message;
   if (*category_group_enabled &
       (ENABLED_FOR_RECORDING | ENABLED_FOR_MONITORING)) {
@@ -2071,9 +2052,6 @@ void TraceLog::AddTraceEventEtw(char phase,
                                 const char* name,
                                 const void* id,
                                 const char* extra) {
-#if defined(OS_WIN)
-  TraceEventETWProvider::Trace(name, phase, id, extra);
-#endif
   INTERNAL_TRACE_EVENT_ADD(phase, "ETW Trace Event", name,
                            TRACE_EVENT_FLAG_COPY, "id", id, "extra", extra);
 }
@@ -2082,10 +2060,7 @@ void TraceLog::AddTraceEventEtw(char phase,
                                 const char* name,
                                 const void* id,
                                 const std::string& extra) {
-#if defined(OS_WIN)
-  TraceEventETWProvider::Trace(name, phase, id, extra);
-#endif
-  INTERNAL_TRACE_EVENT_ADD(phase, "ETW Trace Event", name,
+ INTERNAL_TRACE_EVENT_ADD(phase, "ETW Trace Event", name,
                            TRACE_EVENT_FLAG_COPY, "id", id, "extra", extra);
 }