Kills TraceTicks, which was functionally the same as TimeTicks

components/tracing/tracing_messages.h

 // 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.
 
 // Multiply-included message header, no traditional include guard.
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/metrics/histogram.h"
@@ skipping 28 matching lines @@
 IPC_ENUM_TRAITS_MAX_VALUE(base::trace_event::MemoryDumpLevelOfDetail,
                           base::trace_event::MemoryDumpLevelOfDetail::LAST)
 
 IPC_ENUM_TRAITS_MAX_VALUE(
     base::trace_event::MemoryDumpType,
     static_cast<int>(base::trace_event::MemoryDumpType::LAST))
 
 // Sent to all child processes to enable trace event recording.
 IPC_MESSAGE_CONTROL3(TracingMsg_BeginTracing,
                      std::string /*  trace_config_str */,
-                     base::TraceTicks /* browser_time */,
+                     base::TimeTicks /* browser_time */,
                      uint64 /* Tracing process id (hash of child id) */)
 
 // Sent to all child processes to disable trace event recording.
 IPC_MESSAGE_CONTROL0(TracingMsg_EndTracing)
 
 // Sent to all child processes to cancel trace event recording.
 IPC_MESSAGE_CONTROL0(TracingMsg_CancelTracing)
 
 // Sent to all child processes to start monitoring.
 IPC_MESSAGE_CONTROL2(TracingMsg_EnableMonitoring,
                      std::string /*  trace_config_str */,
-                     base::TraceTicks /* browser_time */)
+                     base::TimeTicks /* browser_time */)
 
 // Sent to all child processes to stop monitoring.
 IPC_MESSAGE_CONTROL0(TracingMsg_DisableMonitoring)
 
 // Sent to all child processes to capture the current monitorint snapshot.
 IPC_MESSAGE_CONTROL0(TracingMsg_CaptureMonitoringSnapshot)
 
 // Sent to all child processes to get trace buffer fullness.
 IPC_MESSAGE_CONTROL0(TracingMsg_GetTraceLogStatus)
 
@@ skipping 57 matching lines @@
 
 // Reply to TracingMsg_ProcessMemoryDumpRequest.
 IPC_MESSAGE_CONTROL2(TracingHostMsg_ProcessMemoryDumpResponse,
                      uint64 /* dump_guid */,
                      bool /* success */)
 
 IPC_MESSAGE_CONTROL1(TracingHostMsg_TriggerBackgroundTrace,
                      std::string /* name */)
 
 IPC_MESSAGE_CONTROL0(TracingHostMsg_AbortBackgroundTrace)