DM: tweak output.
Show task name in verbose mode only, and add task runtime.

BUG=skia:
R=reed@google.com, bsalomon@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/185233004

git-svn-id: http://skia.googlecode.com/svn/trunk@13639 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMTask.cpp b/dm/DMTask.cpp
index 1c4cc25..419463a 100644
--- a/dm/DMTask.cpp
+++ b/dm/DMTask.cpp
@@ -25,8 +25,12 @@
     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) {
@@ -37,6 +41,7 @@
 CpuTask::CpuTask(const Task& parent) : Task(parent) {}
 
 void CpuTask::run() {
+    this->start();
     if (!this->shouldSkip()) {
         this->draw();
     }
@@ -47,6 +52,7 @@
 GpuTask::GpuTask(Reporter* reporter, TaskRunner* taskRunner) : Task(reporter, taskRunner) {}
 
 void GpuTask::run(GrContextFactory& factory) {
+    this->start();
     if (!this->shouldSkip()) {
         this->draw(&factory);
     }