GBM Ozone implementation

ui/gfx/gfx.gyp

Index: ui/gfx/gfx.gyp
diff --git a/ui/gfx/gfx.gyp b/ui/gfx/gfx.gyp
index 7a3ed268d20852e679edab61c490eab1a029ddec..c30b9277705ec9ef3c4e0b668af7894b09abe26f 100644
--- a/ui/gfx/gfx.gyp
+++ b/ui/gfx/gfx.gyp
@@ -237,8 +237,13 @@
         'ozone/dri/dri_vsync_provider.h',
         'ozone/dri/dri_wrapper.cc',
         'ozone/dri/dri_wrapper.h',
+        'ozone/dri/gbm_surface.h',
+        'ozone/dri/gbm_surface.cc',
+        'ozone/dri/gbm_surface_factory.cc',
+        'ozone/dri/gbm_surface_factory.h',
         'ozone/dri/hardware_display_controller.cc',
         'ozone/dri/hardware_display_controller.h',
+        'ozone/dri/scanout_surface.h',
         'ozone/impl/file_surface_factory.cc',
         'ozone/impl/file_surface_factory.h',
         'ozone/surface_factory_ozone.cc',
@@ -452,7 +457,14 @@
         }],
         ['ozone_platform_dri==1', {
           'dependencies': [
-          '<(DEPTH)/build/linux/system.gyp:dridrm',
+            '<(DEPTH)/build/linux/system.gyp:dridrm',
+          ],
+        }],
+        ['ozone_platform_gbm==1', {
+          'dependencies': [
+            '<(DEPTH)/build/linux/system.gyp:dridrm',
+            '<(DEPTH)/third_party/khronos/khronos.gyp:khronos_headers',
+            '<(DEPTH)/third_party/mesa/mesa.gyp:mesa_gbm',
           ],
         }],
         ['desktop_linux==1 or chromeos==1', {