components: Add Exosphere component.

components/exo/display.cc

+// Copyright 2015 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 "components/exo/display.h"
+
+#include "base/trace_event/trace_event.h"
+#include "base/trace_event/trace_event_argument.h"
+#include "components/exo/shared_memory.h"
+#include "components/exo/shell_surface.h"
+#include "components/exo/surface.h"
+
+namespace exo {
+
+////////////////////////////////////////////////////////////////////////////////
+// Display, public:
+
+Display::Display() {}
+
+Display::~Display() {}
+
+scoped_ptr<Surface> Display::CreateSurface() {
+  TRACE_EVENT0("exo", "Display::CreateSurface");
+
+  return make_scoped_ptr(new Surface);
+}
+
+scoped_ptr<SharedMemory> Display::CreateSharedMemory(
+    const base::SharedMemoryHandle& handle,
+    size_t size) {
+  TRACE_EVENT1("exo", "Display::CreateSharedMemory", "size", size);
+
+  if (!base::SharedMemory::IsHandleValid(handle))
+    return nullptr;
+
+  return make_scoped_ptr(new SharedMemory(handle));
+}
+
+scoped_ptr<ShellSurface> Display::CreateShellSurface(Surface* surface) {
+  TRACE_EVENT1("exo", "Display::CreateShellSurface", "surface",
+               surface->AsTracedValue());
+
+  return make_scoped_ptr(new ShellSurface(surface));
+}
+
+}  // namespace exo