Replace image_messages.h with Mojo service

mojo/mojo_base.gyp

Index: mojo/mojo_base.gyp
diff --git a/mojo/mojo_base.gyp b/mojo/mojo_base.gyp
index 9f73e5de8e013239c143786866a5ee9e873a1142..762747961e6e307bb00c6be61486864f01f15d02 100644
--- a/mojo/mojo_base.gyp
+++ b/mojo/mojo_base.gyp
@@ -83,6 +83,25 @@
       ],
     },
     {
+      # GN version: //mojo/converters/geometry
+      'target_name': 'mojo_geometry_lib',
+      'type': '<(component)',
+      'defines': [
+        'MOJO_GEOMETRY_IMPLEMENTATION',
+      ],
+      'dependencies': [
+        '../third_party/mojo_services/mojo_services_public.gyp:mojo_geometry_bindings',
+        '../ui/gfx/gfx.gyp:gfx_geometry',
+        'mojo_environment_chromium',
+        '<(mojo_system_for_component)',
+      ],
+      'sources': [
+        'converters/geometry/geometry_type_converters.cc',
+        'converters/geometry/geometry_type_converters.h',
+        'converters/geometry/mojo_geometry_export.h',
+      ],
+    },
+    {
       # GN version: //mojo/common:mojo_common_unittests
       'target_name': 'mojo_common_unittests',
       'type': 'executable',