From 4ceaafc0a829d00b0294ff0ea0b6ea836e97ab89 Mon Sep 17 00:00:00 2001
From: Dan Field <dnfield@google.com>
Date: Tue, 27 Aug 2019 17:52:35 -0700
Subject: [PATCH] Make Skia cache size channel respond with a value (#11550)

---
 shell/common/fixtures/shell_test.dart | 3 +++
 shell/common/shell.cc                 | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/shell/common/fixtures/shell_test.dart b/shell/common/fixtures/shell_test.dart
index 5deaa51c796b4..2893419fe4038 100644
--- a/shell/common/fixtures/shell_test.dart
+++ b/shell/common/fixtures/shell_test.dart
@@ -63,6 +63,9 @@ void testCanLaunchSecondaryIsolate() {
 @pragma('vm:entry-point')
 void testSkiaResourceCacheSendsResponse() {
   final PlatformMessageResponseCallback callback = (ByteData data) {
+    if (data == null) {
+      throw 'Response must not be null.';
+    }
     notifyNative();
   };
   const String json = '''{
diff --git a/shell/common/shell.cc b/shell/common/shell.cc
index 0fd2315e6d7fe..7e5926f074408 100644
--- a/shell/common/shell.cc
+++ b/shell/common/shell.cc
@@ -959,7 +959,9 @@ void Shell::HandleEngineSkiaMessage(fml::RefPtr<PlatformMessage> message) {
                                                true);
         }
         if (response) {
-          response->CompleteEmpty();
+          std::vector<uint8_t> data = {1};
+          response->Complete(
+              std::make_unique<fml::DataMapping>(std::move(data)));
         }
       });
 }