Clean up dead code.

tools/gpu/gl/command_buffer/GLTestContext_command_buffer.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 "SkMutex.h"
 #include "SkOnce.h"
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLAssembleInterface.h"
 #include "gl/command_buffer/GLTestContext_command_buffer.h"
-#include "../ports/SkOSEnvironment.h"
 #include "../ports/SkOSLibrary.h"
 
 typedef void *EGLDisplay;
 typedef unsigned int EGLBoolean;
 typedef void *EGLConfig;
 typedef void *EGLSurface;
 typedef void *EGLContext;
 typedef int32_t EGLint;
 typedef void* EGLNativeDisplayType;
 typedef void* EGLNativeWindowType;
@@ skipping 303 matching lines @@
     return result;
 }
 
 int CommandBufferGLTestContext::getSampleCount() {
     EGLint result = 0;
     gfGetConfigAttrib(fDisplay, static_cast<EGLConfig>(fConfig), EGL_SAMPLES, &result);
     return result;
 }
 
 }  // namespace sk_gpu_test