Switch to minimal ICU data config for flutter (flutter/engine#5922)

engine/src/flutter/shell/platform/android/BUILD.gn

@@ -160,7 +160,7 @@ copy("flutter_shell_assets") {
   visibility = [ ":*" ]
 
   sources = [
-    "//third_party/icu/android/icudtl.dat",
+    "//third_party/icu/flutter/icudtl.dat",
   ]
 
   outputs = [

engine/src/flutter/shell/platform/darwin/desktop/BUILD.gn

@@ -48,7 +48,7 @@ if (!is_fuchsia_host) {
 
   resource_copy_mac("mac_desktop_resources") {
     app_name = "FlutterTester"
-    resources = [ "//third_party/icu/common/icudtl.dat" ]
+    resources = [ "//third_party/icu/flutter/icudtl.dat" ]
     bundle_directory = "."
   }
 

engine/src/flutter/shell/platform/darwin/ios/BUILD.gn

@@ -212,7 +212,7 @@ copy("copy_framework_icu") {
   visibility = [ ":*" ]
   set_sources_assignment_filter([])
   sources = [
-    "//third_party/icu/ios/icudtl.dat",
+    "//third_party/icu/flutter/icudtl.dat",
   ]
   set_sources_assignment_filter(sources_assignment_filter)
   outputs = [

engine/src/flutter/shell/platform/embedder/BUILD.gn

@@ -114,7 +114,7 @@ if (is_mac) {
   copy("copy_icu") {
     visibility = [ ":*" ]
     sources = [
-      "//third_party/icu/common/icudtl.dat",
+      "//third_party/icu/flutter/icudtl.dat",
     ]
     outputs = [
       "$_flutter_embedder_framework_dir/Versions/A/Resources/icudtl.dat",