Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

tests/GrContextFactoryTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"
 
 #if SK_SUPPORT_GPU
 
 #include "GrContextFactory.h"
 #include "GrCaps.h"
 #include "Test.h"
 
-using sk_gpu_test::GrContextFactory;
-
 DEF_GPUTEST(GrContextFactory_NVPRContextOptionHasPathRenderingSupport, reporter, /*factory*/) {
     // Test that if NVPR is requested, the context always has path rendering
     // or the context creation fails.
     GrContextFactory testFactory;
     // Test that if NVPR is possible, caps are in sync.
     for (int i = 0; i < GrContextFactory::kGLContextTypeCnt; ++i) {
         GrContextFactory::GLContextType glCtxType = static_cast<GrContextFactory::GLContextType>(i);
         GrContext* context = testFactory.get(glCtxType,
                                              GrContextFactory::kEnableNVPR_GLContextOptions);
         if (!context) {
@@ skipping 40 matching lines @@
         REPORTER_ASSERT(reporter, info2.fGrContext);
         REPORTER_ASSERT(reporter, info2.fGLContext);
         REPORTER_ASSERT(reporter, info1.fGrContext != info2.fGrContext);
         // fGLContext should also change, but it also could get the same address.
 
         info1.fGrContext->unref();
     }
 }
 
 #endif