Update paths for icu_data move (#4068)

content_handler/BUILD.gn

@@ -44,7 +44,6 @@ template("flutter_content_handler") {
     deps = [
              "//application/lib/app",
              "//application/lib/svc",
-             "//apps/icu_data/lib",
              "//apps/mozart/lib/flutter/sdk_ext",
              "//apps/mozart/lib/scenic:client",
              "//apps/mozart/services/input",
@@ -62,9 +61,10 @@ template("flutter_content_handler") {
              "//flutter/vulkan",
              "//garnet/public/lib/fidl/dart/sdk_ext",
              "//garnet/public/lib/ftl",
+             "//garnet/public/lib/icu_data/cpp",
              "//garnet/public/lib/mtl",
-             "//lib/tonic",
              "//garnet/public/lib/zip",
+             "//lib/tonic",
              "//magma:vulkan",
              "//third_party/rapidjson",
              "//third_party/skia",

content_handler/app.cc

@@ -7,13 +7,13 @@
 #include <thread>
 #include <utility>
 
-#include "apps/icu_data/lib/icu_data.h"
 #include "apps/tracing/lib/trace/provider.h"
 #include "flutter/common/settings.h"
 #include "flutter/common/threads.h"
 #include "flutter/sky/engine/platform/fonts/fuchsia/FontCacheFuchsia.h"
 #include "lib/ftl/macros.h"
 #include "lib/ftl/tasks/task_runner.h"
+#include "lib/icu_data/cpp/icu_data.h"
 #include "lib/mtl/tasks/message_loop.h"
 
 namespace flutter_runner {