Issue-141903: Rename "descheduled" trace event for gpu swap to something understandable

gpu/command_buffer/service/gpu_scheduler.cc

Index: gpu/command_buffer/service/gpu_scheduler.cc
diff --git a/gpu/command_buffer/service/gpu_scheduler.cc b/gpu/command_buffer/service/gpu_scheduler.cc
index de83617309af26dc72ec1e2047b110a03695357d..188c03b83a1d468a1a45f8056c42497f0b7b65ff 100644
--- a/gpu/command_buffer/service/gpu_scheduler.cc
+++ b/gpu/command_buffer/service/gpu_scheduler.cc
@@ -124,7 +124,8 @@ void GpuScheduler::SetScheduled(bool scheduled) {
     DCHECK_GE(unscheduled_count_, 0);
 
     if (unscheduled_count_ == 0) {
-      TRACE_EVENT_ASYNC_END1("gpu", "Descheduled", this, "GpuScheduler", this);
+      TRACE_EVENT_ASYNC_END1("gpu", "ProcessingSwap", this,
+                              "GpuScheduler", this);

[nduca, 2012/09/25 18:40:15]

nit: indentation should match previous line

       // When the scheduler transitions from the unscheduled to the scheduled
       // state, cancel the task that would reschedule it after a timeout.
       reschedule_task_factory_.InvalidateWeakPtrs();
@@ -134,7 +135,7 @@ void GpuScheduler::SetScheduled(bool scheduled) {
     }
   } else {
     if (unscheduled_count_ == 0) {
-      TRACE_EVENT_ASYNC_BEGIN1("gpu", "Descheduled", this,
+      TRACE_EVENT_ASYNC_BEGIN1("gpu", "ProcessingSwap", this,
                                "GpuScheduler", this);
 #if defined(OS_WIN)
       // When the scheduler transitions from scheduled to unscheduled, post a