Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

src/gpu/gl/debug/GrFrameBufferObj.h

Index: src/gpu/gl/debug/GrFrameBufferObj.h
diff --git a/src/gpu/gl/debug/GrFrameBufferObj.h b/src/gpu/gl/debug/GrFrameBufferObj.h
new file mode 100644
index 0000000000000000000000000000000000000000..40e123e49f618c3f15683ee7c832687355a39057
--- /dev/null
+++ b/src/gpu/gl/debug/GrFrameBufferObj.h
@@ -0,0 +1,67 @@
+/*
+ * 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 GrFrameBufferObj_DEFINED
+#define GrFrameBufferObj_DEFINED
+
+#include "GrFakeRefObj.h"
+class GrFBBindableObj;
+
+////////////////////////////////////////////////////////////////////////////////
+// TODO: when a framebuffer obj is bound the GL_SAMPLES query must return 0
+// TODO: GL_STENCIL_BITS must also be redirected to the framebuffer
+class GrFrameBufferObj : public GrFakeRefObj {
+    GR_DEFINE_CREATOR(GrFrameBufferObj);
+
+public:
+    GrFrameBufferObj()
+        : GrFakeRefObj()
+        , fBound(false)
+        , fColorBuffer(nullptr)
+        , fDepthBuffer(nullptr)
+        , fStencilBuffer(nullptr) {
+    }
+
+    virtual ~GrFrameBufferObj() {
+        fColorBuffer = nullptr;
+        fDepthBuffer = nullptr;
+        fStencilBuffer = nullptr;
+    }
+
+    void setBound()         { fBound = true; }
+    void resetBound()       { fBound = false; }
+    bool getBound() const   { return fBound; }
+
+    void setColor(GrFBBindableObj *buffer);
+    GrFBBindableObj *getColor()       { return fColorBuffer; }
+
+    void setDepth(GrFBBindableObj *buffer);
+    GrFBBindableObj *getDepth()       { return fDepthBuffer; }
+
+    void setStencil(GrFBBindableObj *buffer);
+    GrFBBindableObj *getStencil()     { return fStencilBuffer; }
+
+    void deleteAction() override {
+
+        setColor(nullptr);
+        setDepth(nullptr);
+        setStencil(nullptr);
+
+        this->INHERITED::deleteAction();
+    }
+
+protected:
+private:
+    bool fBound;        // is this frame buffer currently bound via "glBindFramebuffer"?
+    GrFBBindableObj * fColorBuffer;
+    GrFBBindableObj * fDepthBuffer;
+    GrFBBindableObj * fStencilBuffer;
+
+    typedef GrFakeRefObj INHERITED;
+};
+
+#endif // GrFrameBufferObj_DEFINED