Revert of Let DM run unit tests. (https://codereview.chromium.org/178273002/)

Reason for revert:
broke tests

Original issue's description:
> Let DM run unit tests.
>   - refactor GYPs and a few flags
>   - make GPU tests grab a thread-local GrContextFactory when needed as we do in DM for GMs
>   - add a few more UI features to make DM more like tests
>
> I believe this makes the program 'tests' obsolete.
>
> It should be somewhat faster to run the two sets together than running the old binaries serially:
>   - serial: tests 20s (3m18s CPU), dm 21s (3m01s CPU)
>   - together: 27s (6m21s CPU)
>
> Next up is to incorporate benches.  I'm only planning there on a single-pass sanity check, so that won't obsolete the program 'bench' just yet.
>
> Tested: out/Debug/tests && out/Debug/dm && echo ok
> BUG=skia:
>
> Committed: http://code.google.com/p/skia/source/detail?r=13586

R=bsalomon@google.com, mtklein@google.com, tfarina@chromium.org, mtklein@chromium.org
TBR=bsalomon@google.com, mtklein@chromium.org, mtklein@google.com, tfarina@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: reed@google.com

Review URL: https://codereview.chromium.org/179403010

git-svn-id: http://skia.googlecode.com/svn/trunk@13587 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/dm/DMTask.cpp b/dm/DMTask.cpp
index 2f009f0..a5c75f0 100644
--- a/dm/DMTask.cpp
+++ b/dm/DMTask.cpp
@@ -26,7 +26,8 @@
     if (!this->shouldSkip()) {
         this->draw();
     }
-    fReporter->finish(this->name());
+    fReporter->finish();
+    fReporter->updateStatusLine();
     delete this;
 }
 
@@ -38,12 +39,8 @@
     }
 }
 
-void Task::fail(const char* msg) {
-    SkString failure(this->name());
-    if (msg) {
-        failure.appendf(": %s", msg);
-    }
-    fReporter->fail(failure);
+void Task::fail() {
+    fReporter->fail(this->name());
 }
 
 }  // namespace DM