Add recipe changelog (#13270)

Also add sources to one of the fuchsia targets to make
sure that the files exist.

Author: iskakaushik

recipe_changelog.md

@@ -0,0 +1,6 @@
+# Recipe Changelog
+
+### 21 Oct 2019
+
+* Recipe Link: https://chromium-review.googlesource.com/c/chromium/tools/build/+/1872832
+* Reason: `dart:kernel_compiler` is no longer a valid target after https://github.com/flutter/engine/pull/13158. This change is to account for that.

tools/fuchsia/fuchsia_archive.gni

@@ -76,6 +76,7 @@ template("fuchsia_archive") {
 
   action("${target_name}_dir") {
     script = "$flutter_root/tools/fuchsia/copy_path.py"
+    sources = copy_sources
     response_file_contents = rebase_path(copy_sources + copy_outputs)
     deps = pkg_dir_deps
     args = [ "--file-list={{response_file_name}}" ]
@@ -87,10 +88,12 @@ template("fuchsia_archive") {
     script = "$flutter_root/tools/fuchsia/gen_package.py"
     deps = pkg_dir_deps + [ ":${target_name}_dir" ]
     sources = copy_outputs
+
     inputs = []
     if (defined(invoker.inputs)) {
-      inputs = invoker.inputs
+      inputs += invoker.inputs
     }
+
     args = [
       "--pm-bin",
       rebase_path("//fuchsia/sdk/$host_os/tools/pm"),