Move GLSurface creation from //ui/gl to //ui/gl/init.

ui/gl/BUILD.gn

Index: ui/gl/BUILD.gn
diff --git a/ui/gl/BUILD.gn b/ui/gl/BUILD.gn
index 159a5b75463ea017eb2616d5acf222b56f87e667..bdadc7f876c9811cef16bf031da1808f55736624 100644
--- a/ui/gl/BUILD.gn
+++ b/ui/gl/BUILD.gn
@@ -90,7 +90,6 @@ component("gl") {
     "gl_surface.cc",
     "gl_surface.h",
     "gl_surface_android.cc",
-    "gl_surface_mac.cc",
     "gl_surface_osmesa.cc",
     "gl_surface_osmesa.h",
     "gl_surface_overlay.cc",
@@ -187,6 +186,7 @@ component("gl") {
       "gl_image_ozone_native_pixmap.h",
       "gl_implementation_ozone.cc",
       "gl_surface_ozone.cc",
+      "gl_surface_ozone.h",
     ]
 
     deps += [ "//ui/ozone" ]
@@ -221,6 +221,8 @@ component("gl") {
       "gl_bindings_autogen_wgl.h",
       "gl_context_wgl.cc",
       "gl_context_wgl.h",
+      "gl_surface_osmesa_win.cc",
+      "gl_surface_osmesa_win.h",
       "gl_surface_wgl.cc",
       "gl_surface_wgl.h",
       "gl_wgl_api_implementation.cc",