Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

tests/TestConfigParsing.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCommonFlagsConfig.h"
 #include "Test.h"
 #include <initializer_list>
 
-using sk_gpu_test::GrContextFactory;
-
 namespace {
 // The code
 //   SkCommandLineFlags::StringArray FLAGS_config1 = make_string_array({"a", "b"})
 // can be used to construct string array that one gets with command line flags.
 // For example, the call above is equivalent of
 //   DEFINE_string(config1, "a b", "");
 // in cases where the default command line flag value ("a b") is used.
 // make_string_array can be used to construct StringArray strings that have spaces in
 // them.
 SkCommandLineFlags::StringArray make_string_array(std::initializer_list<const char*> strings) {
@@ skipping 303 matching lines @@
             REPORTER_ASSERT(reporter,
                             configs[i]->getViaParts()[j].equals(expectedConfigs[i].vias[j]));
         }
     }
 #if SK_SUPPORT_GPU
     REPORTER_ASSERT(reporter, configs[0]->asConfigGpu());
     REPORTER_ASSERT(reporter, !configs[1]->asConfigGpu());
     REPORTER_ASSERT(reporter, !configs[2]->asConfigGpu());
 #endif
 }