Split //ios/chrome/browser in multiple targets.

ios/chrome/browser/ui/voice/BUILD.gn

Index: ios/chrome/browser/ui/voice/BUILD.gn
diff --git a/ios/chrome/browser/ui/voice/BUILD.gn b/ios/chrome/browser/ui/voice/BUILD.gn
index 06589873a10eb0cb4b4e45890ea181cbc4694e4d..7cb794bc476ad94bbda9136eb5578d50d1dcefa7 100644
--- a/ios/chrome/browser/ui/voice/BUILD.gn
+++ b/ios/chrome/browser/ui/voice/BUILD.gn
@@ -25,6 +25,7 @@ source_set("unit_tests") {
   ]
 
   deps = [
+    ":voice_unit_tests_bundle_data",
     "//base",
     "//base/test:test_support",
     "//ios/web",
@@ -37,3 +38,15 @@ source_set("unit_tests") {
     ":voice",
   ]
 }
+
+bundle_data("voice_unit_tests_bundle_data") {
+  visibility = [ ":unit_tests" ]
+  testonly = true
+  sources = [
+    "//ios/chrome/test/data/voice/test_sound.m4a",
+  ]
+  outputs = [
+    "{{bundle_resources_dir}}/{{source_root_relative_dir}}/" +
+        "{{source_file_part}}",
+  ]
+}