Revert of Let DM run unit tests.

dm/DMTestTask.cpp

-#include "DMTestTask.h"
-#include "DMUtil.h"
-#include "SkCommandLineFlags.h"
-
-DEFINE_bool2(pathOpsExtended,     x, false, "Run extended pathOps tests.");
-DEFINE_bool2(pathOpsSingleThread, z, false, "Disallow pathOps tests from using threads.");
-DEFINE_bool2(pathOpsVerbose,      V, false, "Tell pathOps tests to be verbose.");
-
-namespace DM {
-
-TestTask::TestTask(Reporter* reporter,
-                   TaskRunner* taskRunner,
-                   skiatest::TestRegistry::Factory factory)
-    : Task(reporter, taskRunner)
-    , fTaskRunner(taskRunner)
-    , fTest(factory(NULL))
-    , fName(UnderJoin("test", fTest->getName())) {}
-
-void TestTask::draw() {
-    if (this->usesGpu()) {
-        fTest->setGrContextFactory(fTaskRunner->getGrContextFactory());
-    }
-    fTest->setReporter(&fTestReporter);
-    fTest->run();
-    if (!fTest->passed()) {
-        this->fail(fTestReporter.failure());
-    }
-}
-
-bool TestTask::TestReporter::allowExtendedTest() const { return FLAGS_pathOpsExtended; }
-bool TestTask::TestReporter::allowThreaded()     const { return !FLAGS_pathOpsSingleThread; }
-bool TestTask::TestReporter::verbose()           const { return FLAGS_pathOpsVerbose; }
-
-}  // namespace DM