Add support for khronos gl-cts using its drawElements apis

gpu/khronos_conform_support/native/egl_native_windowless.cc

Index: gpu/khronos_conform_support/native/egl_native_windowless.cc
diff --git a/gpu/khronos_conform_support/native/egl_native_windowless.cc b/gpu/khronos_conform_support/native/egl_native_windowless.cc
new file mode 100644
index 0000000000000000000000000000000000000000..58d021dfdda5a793a7bf76b5c41695a2f7d9672a
--- /dev/null
+++ b/gpu/khronos_conform_support/native/egl_native_windowless.cc
@@ -0,0 +1,75 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Using egl_native from gles2_conform_support
+// TODO: We may want to phase out the old gles2_conform support in preference
+// of this implementation.  So eventually we'll need to move the egl_native
+// stuff here or to a shareable location/path.
+#include "gpu/gles2_conform_support/egl/display.h"
+
+#include "third_party/khronos_conform/framework/egl/tcuEglPlatform.hpp"
+
+namespace egl {
+namespace native {
+namespace windowless {
+
+class Window : public tcu::NativeWindow {
+  public:
+    Window(tcu::egl::Display& display, EGLConfig config,
+           const EGLint* attribList, int width, int height)
+        : tcu::NativeWindow::NativeWindow(),
+          eglDisplay_(display),
+          eglSurface_(display, config, (EGLNativeWindowType)NULL, attribList) {
+    }
+
+    virtual ~Window() {
+    }
+
+    tcu::egl::Display& getEglDisplay() {
+      return eglDisplay_;
+    }
+
+    tcu::egl::WindowSurface& getEglSurface() {
+      return eglSurface_;
+    }
+
+    void processEvents() {
+      return;
+    }
+
+  private:
+    tcu::egl::Display& eglDisplay_;
+    tcu::egl::WindowSurface eglSurface_;
+};
+
+class Platform : public tcu::EglPlatform {
+  public:
+    Platform()
+        : tcu::EglPlatform::EglPlatform() {
+    }
+
+    virtual ~Platform() {
+    }
+
+    tcu::NativeWindow* createWindow(tcu::NativeDisplay& dpy,
+                                    EGLConfig config,
+                                    const EGLint* attribList,
+                                    int width, int height,
+                                    qpVisibility visibility) {
+      tcu::egl::Display& eglDisplay = dpy.getEglDisplay();
+      egl::Display* display = static_cast<egl::Display*>(
+        eglDisplay.getEGLDisplay());
+      display->SetCreateOffscreen(width, height);
+      return new Window(eglDisplay, config, attribList, width, height);
+    }
+};
+
+} // namespace windowless
+} // namespace native
+} // namespace egl
+
+tcu::Platform* createPlatform (void)
+{
+  return new egl::native::windowless::Platform();
+}