[Android WebView] Implement Ubercomp for Render Thread support

android_webview/browser/hardware_renderer_interface.h

+// 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.
+
+#ifndef ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_INTERFACE_H_
+#define ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_INTERFACE_H_
+
+struct AwDrawGLInfo;
+
+namespace android_webview {
+
+struct DrawGLResult;
+
+class HardwareRendererInterface {
+ public:
+  virtual ~HardwareRendererInterface() {}
+
+  virtual bool DrawGL(bool stencil_enabled,
+                      int framebuffer_binding_ext,
+                      AwDrawGLInfo* draw_info,
+                      DrawGLResult* result) = 0;
+};
+
+}  // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_INTERFACE_H_