Provide script/gypi support for manifest generation

chrome/browser/browser_resources.grd

Index: chrome/browser/browser_resources.grd
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 21f77c3ffe5718250257a55065bd92286711d065..aa2247023f51265f1f196a2c54b8f879578bb8ca 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -295,10 +295,6 @@
         <include name="IDR_CROSH_BUILTIN_MANIFEST" file="resources\chromeos\crosh_builtin\manifest.json" type="BINDATA" />
         <include name="IDR_CRYPTOHOME_HTML" file="resources\chromeos\cryptohome.html" flattenhtml="true" type="BINDATA" />
         <include name="IDR_CRYPTOHOME_JS" file="resources\chromeos\cryptohome.js" type="BINDATA" />
-        <!-- manifest file of ChromeVox accessibility extension -->
-        <include name="IDR_CHROMEVOX_MANIFEST" file="resources\chromeos\chromevox\manifest.json" type="BINDATA" />
-        <include name="IDR_CHROMEVOX2_MANIFEST" file="resources\chromeos\chromevox2\manifest.json" type="BINDATA" />
-        <include name="IDR_CHROMEVOX_GUEST_MANIFEST" file="resources\chromeos\chromevox\manifest_guest.json" type="BINDATA" />
         <!-- manifest file of Connectivity Diagnostics app -->
         <include name="IDR_CONNECTIVITY_DIAGNOSTICS_MANIFEST" file="resources\chromeos\connectivity_diagnostics\manifest.json" type="BINDATA" />
         <include name="IDR_CONNECTIVITY_DIAGNOSTICS_LAUNCHER_MANIFEST" file="resources\chromeos\connectivity_diagnostics_launcher\manifest.json" type="BINDATA" />