ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

ui/ozone/public/native_pixmap_manager.h

Index: ui/ozone/public/native_pixmap_manager.h
diff --git a/ui/ozone/public/native_pixmap_manager.h b/ui/ozone/public/native_pixmap_manager.h
index b6afdad6a9af95dd364053560c740f5795886dc4..fbbb106b61205066fac6446e55efa3a9688642d9 100644
--- a/ui/ozone/public/native_pixmap_manager.h
+++ b/ui/ozone/public/native_pixmap_manager.h
@@ -10,6 +10,12 @@
 #include "ui/ozone/ozone_export.h"
 #include "ui/ozone/public/surface_factory_ozone.h"
 
+namespace base {
+
+struct FileDescriptor;
+
+}  // namespace base
+
 namespace ui {
 
 // The Ozone interface allows external implementations to hook into Chromium to
@@ -17,9 +23,10 @@ namespace ui {
 class OZONE_EXPORT NativePixmapManager {
  public:
   static NativePixmapManager* GetInstance();
-  static void SetInstance(scoped_ptr<NativePixmapManager> instance);
+  static void SetInstance(NativePixmapManager* instance);
 
-  static scoped_ptr<NativePixmapManager> Create();
+  static scoped_ptr<NativePixmapManager> Create(
+      const base::FileDescriptor& device_fd);
 
   virtual ~NativePixmapManager();
 
@@ -35,6 +42,8 @@ class OZONE_EXPORT NativePixmapManager {
  protected:
   NativePixmapManager();
 
+  virtual void Initialize(const base::FileDescriptor& device_fd) = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(NativePixmapManager);
 };