Move SkGLContext and some GrGLInterface implementations to skgputest module

include/gpu/gl/command_buffer/SkCommandBufferGLContext.h

-
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-#ifndef SKCOMMANDBUFFERGLCONTEXT_DEFINED
-#define SKCOMMANDBUFFERGLCONTEXT_DEFINED
-
-#if SK_COMMAND_BUFFER
-
-#include "gl/SkGLContext.h"
-
-class SkCommandBufferGLContext : public SkGLContext {
-public:
-    ~SkCommandBufferGLContext() override;
-
-    static SkCommandBufferGLContext* Create() {
-        SkCommandBufferGLContext* ctx = new SkCommandBufferGLContext;
-        if (!ctx->isValid()) {
-            delete ctx;
-            return nullptr;
-        }
-        return ctx;
-    }
-
-    static SkCommandBufferGLContext* Create(void* nativeWindow, int msaaSampleCount) {
-        SkCommandBufferGLContext* ctx = new SkCommandBufferGLContext(nativeWindow,
-                                                                     msaaSampleCount);
-        if (!ctx->isValid()) {
-            delete ctx;
-            return nullptr;
-        }
-        return ctx;
-    }
-
-    void presentCommandBuffer();
-
-    bool makeCurrent();
-    int getStencilBits();
-    int getSampleCount();
-
-private:
-    SkCommandBufferGLContext();
-    SkCommandBufferGLContext(void* nativeWindow, int msaaSampleCount);
-    void initializeGLContext(void* nativeWindow, const int* configAttribs,
-                             const int* surfaceAttribs);
-    void destroyGLContext();
-
-    void onPlatformMakeCurrent() const override;
-    void onPlatformSwapBuffers() const override;
-    GrGLFuncPtr onPlatformGetProcAddress(const char* name) const override;
-
-    void* fContext;
-    void* fDisplay;
-    void* fSurface;
-    void* fConfig;
-};
-
-#endif // SK_COMMAND_BUFFER
-
-#endif