Generates Chromecast User-Agent string from current Chromium version.

chromecast/chromecast.gyp

Index: chromecast/chromecast.gyp
diff --git a/chromecast/chromecast.gyp b/chromecast/chromecast.gyp
index 5bd856c0a901fbab583645a5e0d155102abcfc8f..002836f82b1de0075fe828cb197720a46190c65c 100644
--- a/chromecast/chromecast.gyp
+++ b/chromecast/chromecast.gyp
@@ -105,6 +105,7 @@
         'cast_common',
         'cast_service',
         'cast_shell_pak',
+        'cast_version_header',
         '../ui/aura/aura.gyp:aura_test_support',
         '../content/content.gyp:content',
         '../content/content.gyp:content_app_browser',
@@ -147,5 +148,37 @@
         }],
       ],
     },
+    {
+      'target_name': 'cast_version_header',
+      'type': 'none',
+      'direct_dependent_settings': {
+        'include_dirs': [
+          '<(SHARED_INTERMEDIATE_DIR)',
+        ],
+      },
+      'actions': [
+        {
+          'action_name': 'version_header',
+          'message': 'Generating version header file: <@(_outputs)',
+          'inputs': [
+            '<(version_path)',
+            'common/version.h.in',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/chromecast/common/version.h',
+          ],
+          'action': [
+            'python',
+            '<(version_py_path)',
+            '-e', 'VERSION_FULL="<(version_full)"',
+            'common/version.h.in',
+            '<@(_outputs)',
+          ],
+          'includes': [
+            '../build/util/version.gypi',
+          ],
+        },
+      ],
+    },
   ],  # end of targets
 }