[bundles] Disable language splits on prod

Change-Id: I05f3f73c8337bd2bfc07e420cdafccaf1bb04370
Reviewed-on: https://chromium-review.googlesource.com/c/1338408Reviewed-by: David Turner <digit@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608847}

chrome/android/BUILD.gn

@@ -1858,13 +1858,14 @@ android_app_bundle("chrome_public_bundle") {
   # Signing is very slow, only do that for official builds.
   sign_bundle = is_official_build
 
-  enable_language_splits = true
+  enable_language_splits = enable_chrome_language_splits
 }
 
 android_app_bundle("chrome_modern_public_bundle") {
   bundle_name = "ChromeModernPublic"
   base_module_target = ":chrome_modern_public_base_module"
   proguard_enabled = !is_java_debug
+  enable_language_splits = enable_chrome_language_splits
   if (modularize_vr) {
     extra_modules = [
       {
@@ -1885,6 +1886,7 @@ android_app_bundle("monochrome_public_bundle") {
     }
     proguard_android_sdk_dep = webview_framework_dep
   }
+  enable_language_splits = enable_chrome_language_splits
   if (modularize_ar) {
     extra_modules = [
       {

chrome/android/chrome_public_apk_tmpl.gni

@@ -19,6 +19,9 @@ declare_args() {
   # Experimental only. Causes .dex files to be store in the APK uncompressed.
   # Only affects monochrome_public_apk and trichrome_chrome_apk.
   use_uncompressed_dex = false
+
+  # Enable language splits in the Chrome bundles.
+  enable_chrome_language_splits = android_channel == "default"
 }
 
 default_chrome_public_jinja_variables = [