DM: also run benches once.

Also:
  - make GrMemoryPoolBenches threadsafe
  - some tweaks to various DM code
  - rename GM::shortName() to getName() to match benches and tests

On my desktop, (289 GMs, 617 benches) x 4 configs, 227 tests takes 46s in Debug, 14s in Release.  (Still minutes faster than running tests && bench && gm.)  GPU singlethreading is definitely the limiting factor again; going to reexamine whether that's helpful to thread it again.

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

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/178473006

git-svn-id: http://skia.googlecode.com/svn/trunk@13603 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMCpuTask.cpp b/dm/DMCpuTask.cpp
index 7a82a75..acbe8d2 100644
--- a/dm/DMCpuTask.cpp
+++ b/dm/DMCpuTask.cpp
@@ -9,7 +9,7 @@
 
 namespace DM {
 
-CpuTask::CpuTask(const char* name,
+CpuTask::CpuTask(const char* config,
                  Reporter* reporter,
                  TaskRunner* taskRunner,
                  const Expectations& expectations,
@@ -18,7 +18,7 @@
     : Task(reporter, taskRunner)
     , fGMFactory(gmFactory)
     , fGM(fGMFactory(NULL))
-    , fName(UnderJoin(fGM->shortName(), name))
+    , fName(UnderJoin(fGM->getName(), config))
     , fExpectations(expectations)
     , fColorType(colorType)
     {}