DM: tweak output.

dm/DMTask.cpp

 #include "DMTask.h"
 #include "DMTaskRunner.h"
 
 namespace DM {
 
 Task::Task(Reporter* reporter, TaskRunner* taskRunner)
     : fReporter(reporter)
     , fTaskRunner(taskRunner)
     , fDepth(0) {
     fReporter->start();
 }
 
 Task::Task(const Task& parent)
     : fReporter(parent.fReporter)
     , fTaskRunner(parent.fTaskRunner)
     , fDepth(parent.depth() + 1) {
     fReporter->start();
 }
 
 void Task::fail(const char* msg) {
     SkString failure(this->name());
     if (msg) {
         failure.appendf(": %s", msg);
     }
     fReporter->fail(failure);
 }
 
+void Task::start() {
+    fStart = SkTime::GetMSecs();
+}
+
 void Task::finish() {
-    fReporter->finish(this->name());
+    fReporter->finish(this->name(), SkTime::GetMSecs() - fStart);
 }
 
 void Task::spawnChild(CpuTask* task) {
     fTaskRunner->add(task);
 }
 
 CpuTask::CpuTask(Reporter* reporter, TaskRunner* taskRunner) : Task(reporter, taskRunner) {}
 CpuTask::CpuTask(const Task& parent) : Task(parent) {}
 
 void CpuTask::run() {
+    this->start();
     if (!this->shouldSkip()) {
         this->draw();
     }
     this->finish();
     SkDELETE(this);
 }
 
 GpuTask::GpuTask(Reporter* reporter, TaskRunner* taskRunner) : Task(reporter, taskRunner) {}
 
 void GpuTask::run(GrContextFactory& factory) {
+    this->start();
     if (!this->shouldSkip()) {
         this->draw(&factory);
     }
     this->finish();
     SkDELETE(this);
 }
 
 
 
 }  // namespace DM