Support removal of DRI platform

ui/gfx/gfx.gyp

Index: ui/gfx/gfx.gyp
diff --git a/ui/gfx/gfx.gyp b/ui/gfx/gfx.gyp
index 6b5403c0c7df4eb0543c63d44150feffdb643d63..ccc17001320b51b58efa26af152bc561c5cda314 100644
--- a/ui/gfx/gfx.gyp
+++ b/ui/gfx/gfx.gyp
@@ -144,18 +144,18 @@
         'matrix3_f.cc',
         'matrix3_f.h',
         'native_widget_types.h',
-        'ozone/impl/dri_skbitmap.cc',
-        'ozone/impl/dri_skbitmap.h',
-        'ozone/impl/dri_surface.cc',
-        'ozone/impl/dri_surface.h',
-        'ozone/impl/dri_surface_factory.cc',
-        'ozone/impl/dri_surface_factory.h',
-        'ozone/impl/dri_wrapper.cc',
-        'ozone/impl/dri_wrapper.h',
+        'ozone/dri/dri_skbitmap.cc',
+        'ozone/dri/dri_skbitmap.h',
+        'ozone/dri/dri_surface.cc',
+        'ozone/dri/dri_surface.h',
+        'ozone/dri/dri_surface_factory.cc',
+        'ozone/dri/dri_surface_factory.h',
+        'ozone/dri/dri_wrapper.cc',
+        'ozone/dri/dri_wrapper.h',
+        'ozone/dri/hardware_display_controller.cc',
+        'ozone/dri/hardware_display_controller.h',
         'ozone/impl/file_surface_factory.cc',
         'ozone/impl/file_surface_factory.h',
-        'ozone/impl/hardware_display_controller.cc',
-        'ozone/impl/hardware_display_controller.h',
         'ozone/surface_factory_ozone.cc',
         'ozone/surface_factory_ozone.h',
         'pango_util.cc',
@@ -374,7 +374,7 @@
             '<(DEPTH)/build/linux/system.gyp:pangocairo',
           ],
         }],
-        ['use_ozone==1', {
+        ['ozone_platform_dri==1', {
           'dependencies': [
           '<(DEPTH)/build/linux/system.gyp:dridrm',
           ],