Android: Enable use_debug_fission for official builds

Bug: 1122182
Change-Id: I29b579cf7c5e7eb6d2528a6fad28562059698bf8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2508342Reviewed-by: Ben Mason <benmason@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822625}

build/config/compiler/compiler.gni

@@ -233,8 +233,9 @@ assert(
     use_debug_fission == "default" || use_debug_fission || !use_debug_fission,
     "Invalid use_debug_fission.")
 if (use_debug_fission == "default") {
-  use_debug_fission = is_debug && !is_android && !is_fuchsia && !is_apple &&
-                      !is_win && (use_gold || use_lld) && cc_wrapper == ""
+  use_debug_fission = (is_android && is_official_build) ||
+                      (is_debug && !is_android && !is_fuchsia && !is_apple &&
+                       !is_win && (use_gold || use_lld) && cc_wrapper == "")
 }
 
 # If it wasn't manually set, set to an appropriate default.