[Chromecast] Add service for "displaying" cast web contents.

chromecast/browser/android/apk/templates/BuildConfig.template

Index: chromecast/browser/android/apk/templates/BuildConfig.template
diff --git a/chromecast/browser/android/apk/templates/BuildConfig.template b/chromecast/browser/android/apk/templates/BuildConfig.template
new file mode 100644
index 0000000000000000000000000000000000000000..4f8b551a091d2de03a1acf6e353e56e70221f834
--- /dev/null
+++ b/chromecast/browser/android/apk/templates/BuildConfig.template
@@ -0,0 +1,14 @@
+
+package org.chromium.chromecast.shell;
+
+public class BuildConfig {
+
+  // If true, run receiver apps in a service instead of an activity.
+  public static final boolean DISPLAY_WEB_CONTENTS_IN_SERVICE =
+#if defined(_DISPLAY_WEB_CONTENTS_IN_SERVICE)
+    true;
+#else
+    false;
+#endif
+
+}