densify dump_record

I don't know why the meat is in a separate file.

Change-Id: I9bbc475d1644dd1d596cb7c98ae0e0292846e5d5
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/311585
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 2f1e2cb..2a167c7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -2180,10 +2180,7 @@
   }
 
   test_app("dump_record") {
-    sources = [
-      "tools/DumpRecord.cpp",
-      "tools/dump_record.cpp",
-    ]
+    sources = [ "tools/dump_record.cpp" ]
     deps = [
       ":flags",
       ":skia",