[ios Mojo] Implemented chrome://version.

ios/chrome/ios_chrome_resources.gyp

Index: ios/chrome/ios_chrome_resources.gyp
diff --git a/ios/chrome/ios_chrome_resources.gyp b/ios/chrome/ios_chrome_resources.gyp
index b2116430d4760eff091267380b22a8aa6faa2ae3..92472436537b6574126c0d40231f88f64afed588 100644
--- a/ios/chrome/ios_chrome_resources.gyp
+++ b/ios/chrome/ios_chrome_resources.gyp
@@ -38,6 +38,7 @@
         'ios_resources_gen',
         'ios_strings_gen',
         'ios_theme_resources_gen',
+        'web_ui_mojo_bindings',
       ],
     },
     {
@@ -87,6 +88,9 @@
           'action_name': 'ios_resources',
           'variables': {
             'grit_grd_file': 'app/resources/ios_resources.grd',
+            'grit_additional_defines': [
+              '-E', 'root_gen_dir=<(SHARED_INTERMEDIATE_DIR)',
+            ],
           },
           'includes': [ '../../build/grit_action.gypi' ],
         },
@@ -262,5 +266,16 @@
         '<(SHARED_INTERMEDIATE_DIR)/<(ui_string_overrider_output_basename).h',
       ],
     },
+    {
+      'target_name': 'web_ui_mojo_bindings',
+      # The type of this target must be none. This is so that resources can
+      # depend upon this target for generating the js bindings files. Any
+      # generated cpp files be listed explicitly in browser_ui.
+      'type': 'none',
+      'sources': [
+        '../../chrome/browser/ui/webui/version.mojom',
+      ],
+      'includes': [ '../../mojo/mojom_bindings_generator.gypi' ],
+    },
   ],
 }