Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

include/gpu/gl/angle/SkANGLEGLContext.h

Index: include/gpu/gl/angle/SkANGLEGLContext.h
diff --git a/include/gpu/gl/angle/SkANGLEGLContext.h b/include/gpu/gl/angle/SkANGLEGLContext.h
new file mode 100644
index 0000000000000000000000000000000000000000..ea5e877ca27e8b3bae4565bcd38e111e3f2cc9f3
--- /dev/null
+++ b/include/gpu/gl/angle/SkANGLEGLContext.h
@@ -0,0 +1,61 @@
+
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkANGLEGLContext_DEFINED
+#define SkANGLEGLContext_DEFINED
+
+#if SK_ANGLE
+
+#include "gl/SkGLContext.h"
+
+class SkANGLEGLContext : public SkGLContext {
+public:
+    ~SkANGLEGLContext() override;
+#ifdef SK_BUILD_FOR_WIN
+    static SkANGLEGLContext* CreateDirectX() {
+        SkANGLEGLContext* ctx = new SkANGLEGLContext(false);
+        if (!ctx->isValid()) {
+            delete ctx;
+            return NULL;
+        }
+        return ctx;
+    }
+#endif
+    static SkANGLEGLContext* CreateOpenGL() {
+        SkANGLEGLContext* ctx = new SkANGLEGLContext(true);
+        if (!ctx->isValid()) {
+            delete ctx;
+            return NULL;
+        }
+        return ctx;
+    }
+
+    GrEGLImage texture2DToEGLImage(GrGLuint texID) const override;
+    void destroyEGLImage(GrEGLImage) const override;
+    GrGLuint eglImageToExternalTexture(GrEGLImage) const override;
+    SkGLContext* createNew() const override;
+
+    // The param is an EGLNativeDisplayType and the return is an EGLDispay.
+    static void* GetD3DEGLDisplay(void* nativeDisplay, bool useGLBackend);
+
+private:
+    SkANGLEGLContext(bool preferGLBackend);
+    void destroyGLContext();
+
+    void onPlatformMakeCurrent() const override;
+    void onPlatformSwapBuffers() const override;
+    GrGLFuncPtr onPlatformGetProcAddress(const char* name) const override;
+
+    void* fContext;
+    void* fDisplay;
+    void* fSurface;
+    bool  fIsGLBackend;
+};
+
+#endif
+
+#endif