Revert of Move SkGLContext and some GrGLInterface implementations to skgputest module

src/gpu/gl/debug/GrTextureUnitObj.cpp

Index: src/gpu/gl/debug/GrTextureUnitObj.cpp
diff --git a/src/gpu/gl/debug/GrTextureUnitObj.cpp b/src/gpu/gl/debug/GrTextureUnitObj.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..8de0b092cd40c641db3d7eee80703521ce738bdb
--- /dev/null
+++ b/src/gpu/gl/debug/GrTextureUnitObj.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "GrTextureUnitObj.h"
+#include "GrTextureObj.h"
+
+void GrTextureUnitObj::setTexture(GrTextureObj *texture)  {
+
+    if (fTexture) {
+        GrAlwaysAssert(fTexture->getBound(this));
+        fTexture->resetBound(this);
+
+        GrAlwaysAssert(!fTexture->getDeleted());
+        fTexture->unref();
+    }
+
+    fTexture = texture;
+
+    if (fTexture) {
+        GrAlwaysAssert(!fTexture->getDeleted());
+        fTexture->ref();
+
+        GrAlwaysAssert(!fTexture->getBound(this));
+        fTexture->setBound(this);
+    }
+}