Replace CAST_BUILD_REVISION with <major>.<minor>.<incremental>.

chromecast/chromecast.gyp

Index: chromecast/chromecast.gyp
diff --git a/chromecast/chromecast.gyp b/chromecast/chromecast.gyp
index c9335f0093c20bf3130278d0200fc6b7c3b74f61..6977bbe871ff1bf25b7c62e061b8dc0337e28d13 100644
--- a/chromecast/chromecast.gyp
+++ b/chromecast/chromecast.gyp
@@ -6,6 +6,7 @@
   'variables': {
     'android_support_v13_target%':
         '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
+    'cast_build_release': 'internal/build/cast_build_release',
     'chromium_code': 1,
     'chromecast_branding%': 'Chromium',
     'disable_display%': 0,
@@ -260,8 +261,10 @@
             'python',
             '<(version_py_path)',
             '-e', 'VERSION_FULL="<(version_full)"',
-            # Revision is taken from buildbot if available; otherwise, a dev string is used.
-            '-e', 'CAST_BUILD_REVISION="<!(echo ${CAST_BUILD_REVISION:="eng.${USER}.<!(date +%Y%m%d.%H%M%S)"})"',
+            # CAST_BUILD_INCREMENTAL is taken from buildbot if available;
+            # otherwise, a dev string is used.
+            '-e', 'CAST_BUILD_INCREMENTAL="<!(echo ${CAST_BUILD_INCREMENTAL:="<!(date +%Y%m%d.%H%M%S)"})"',
+            '-e', 'CAST_BUILD_RELEASE="<!(cat <(cast_build_release))"',

[gunsch, 2015/01/23 16:50:33]

How does this fallback if "internal" directory is not present?  (e.g. a public
checkout)

[byungchul, 2015/01/23 17:12:52]

Good catch. Done.

             '-e', 'CAST_IS_DEBUG_BUILD=1 if "<(CONFIGURATION_NAME)" == "Debug" else 0',
             'common/version.h.in',
             '<@(_outputs)',