ozone: ClientPixmapManager passes VGEM fd from browser to renderer.

ui/ozone/common/stub_client_native_pixmap_manager.cc

Index: ui/ozone/common/stub_client_native_pixmap_manager.cc
diff --git a/ui/ozone/common/stub_client_native_pixmap_manager.cc b/ui/ozone/common/stub_client_native_pixmap_manager.cc
index c1a94a59ec6730eab89efd285c27f1c05ab258d3..8d8aa17da49315aa708eacd6ab7275795fe34da7 100644
--- a/ui/ozone/common/stub_client_native_pixmap_manager.cc
+++ b/ui/ozone/common/stub_client_native_pixmap_manager.cc
@@ -13,7 +13,11 @@ namespace {
 class StubClientNativePixmapManager : public ClientNativePixmapManager {
  public:
   StubClientNativePixmapManager() {}
-  ~StubClientNativePixmapManager() override {}
+  ~StubClientNativePixmapManager() override {
+    if (virtual_device_.auto_close) {
+      base::ScopedFD closing_fd(virtual_device_.fd);
+    }
+  }
 
   // ClientNativePixmapManager:
   std::vector<Configuration> GetSupportedConfigurations() const override {
@@ -29,6 +33,14 @@ class StubClientNativePixmapManager : public ClientNativePixmapManager {
   }
 
  private:
+  void Initialize(const base::FileDescriptor& virtual_device) override {
+    DCHECK_EQ(virtual_device_.fd, -1);
+    if (virtual_device.fd >= 0)
+      virtual_device_ = virtual_device;
+  }
+
+  base::FileDescriptor virtual_device_;
+
   DISALLOW_COPY_AND_ASSIGN(StubClientNativePixmapManager);
 };