Add a factory and defines for native Linux surfaces.

ui/base/linux/native_surface_linux_factory.cc

+// Copyright (c) 2013 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.
+
+#include "ui/base/linux/native_surface_linux_factory.h"
+
+#include "base/memory/singleton.h"
+#include "ui/base/linux/native_surface_linux_factory_delegate.h"
+
+namespace ui {
+
+NativeSurfaceLinuxFactory::NativeSurfaceLinuxFactory() {
+}
+
+NativeSurfaceLinuxFactory::~NativeSurfaceLinuxFactory() {
+}
+
+NativeSurfaceLinuxFactory* NativeSurfaceLinuxFactory::GetInstance() {
+  return Singleton<NativeSurfaceLinuxFactory>::get();
+ }
+
+void NativeSurfaceLinuxFactory::SetDelegate(
+    NativeSurfaceLinuxFactoryDelegate* delegate) {
+  delegate_.reset(delegate);
+}
+
+const char* NativeSurfaceLinuxFactory::DefaultDisplaySpec() {
+    return getenv("ASH_DISPLAY_SPEC") ?: "720x1280*2";
+}
+
+void NativeSurfaceLinuxFactory::InitializeHardware() {
+  if (delegate_) {
+    delegate_->InitializeHardware();
+  }
+}
+
+void NativeSurfaceLinuxFactory::ShutdownHardware() {
+  if (delegate_) {
+    delegate_->ShutdownHardware();
+  }
+}
+
+gfx::AcceleratedWidget NativeSurfaceLinuxFactory::GetAcceleratedWidget(
+    const gfx::GLSurfaceHandle& handle) {
+  if (delegate_) {
+    return delegate_->GetAcceleratedWidget(handle);
+  } else {
+    // TODO(rjkroege): Return appropriate AccleratedWidget for a
+    // KMS/DRM-backed native accelerated widget.
+    NOTIMPLEMENTED();
+    return (gfx::AcceleratedWidget)0;
+  }
+}
+
+bool NativeSurfaceLinuxFactory::LoadEGLGLES2Bindings() {
+  if (delegate_) {
+    return delegate_->LoadEGLGLES2Bindings();
+  }
+  // TODO(rjkroege): Setup bindings for KMS/DRM GLES/EGL.
+  return false;
+}
+
+bool NativeSurfaceLinuxFactory::AcceleratedWidgetCanBeResized(
+    gfx::AcceleratedWidget w) {
+  if (delegate_) {
+    return delegate_->AcceleratedWidgetCanBeResized(w);
+  } else {
+    return false;
+  }
+}
+
+}  // namespace ui