ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

ui/ozone/platform/drm/ozone_platform_drm.cc

Index: ui/ozone/platform/drm/ozone_platform_drm.cc
diff --git a/ui/ozone/platform/drm/ozone_platform_drm.cc b/ui/ozone/platform/drm/ozone_platform_drm.cc
index 0d40c719b4f44861e4d0da4501b382e309608665..b0047a01b04c73b3368874dc944843bbdb8ac96f 100644
--- a/ui/ozone/platform/drm/ozone_platform_drm.cc
+++ b/ui/ozone/platform/drm/ozone_platform_drm.cc
@@ -5,6 +5,7 @@
 #include "ui/ozone/platform/drm/ozone_platform_drm.h"
 
 #include "base/at_exit.h"
+#include "base/file_descriptor_posix.h"
 #include "base/thread_task_runner_handle.h"
 #include "ui/base/cursor/ozone/bitmap_cursor_factory_ozone.h"
 #include "ui/events/ozone/device/device_manager.h"
@@ -28,6 +29,7 @@
 #include "ui/ozone/platform/drm/host/drm_overlay_manager.h"
 #include "ui/ozone/platform/drm/host/drm_window_host.h"
 #include "ui/ozone/platform/drm/host/drm_window_host_manager.h"
+#include "ui/ozone/public/native_pixmap_manager.h"
 #include "ui/ozone/public/ozone_gpu_test_helper.h"
 #include "ui/ozone/public/ozone_platform.h"
 
@@ -90,6 +92,9 @@ class OzonePlatformDrm : public OzonePlatform {
     return make_scoped_ptr(
         new DrmNativeDisplayDelegate(display_manager_.get()));
   }
+  base::FileDescriptor GetVirtualDeviceFd() override {
+    return base::FileDescriptor();
+  }
   void InitializeUI() override {
     drm_device_manager_.reset(new DrmDeviceManager(
         scoped_ptr<DrmDeviceGenerator>(new DrmDeviceGenerator())));
@@ -165,4 +170,12 @@ OzonePlatform* CreateOzonePlatformDrm() {
   return new OzonePlatformDrm;
 }
 
+NativePixmapManager* CreateNativePixmapManagerDri() {
+  return CreateStubNativePixmapManager();
+}
+
+NativePixmapManager* CreateNativePixmapManagerDrm() {
+  return CreateStubNativePixmapManager();
+}
+
 }  // namespace ui