sprinkle more tracing in GM, tests, and ok, and add TRACE_FUNC

Change-Id: I562d438bd65e9fd900cfc6831f971b4af25c8ae6
Reviewed-on: https://skia-review.googlesource.com/26361
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
diff --git a/dm/DM.cpp b/dm/DM.cpp
index e8898a4..1b88889 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -1256,7 +1256,7 @@
     if (!FLAGS_dryRun && !is_blacklisted("_", "tests", "_", test.name)) {
         start("unit", "test", "", test.name);
         GrContextFactory factory(grCtxOptions);
-        test.proc(&reporter, &factory);
+        test.run(&reporter, &factory);
     }
     done("unit", "test", "", test.name);
 }