Perf_tests small fix.

Missed changing these two perf tests while making this change:
https://chromium-review.googlesource.com/c/chromium/src/+/1318390

Bug: 903445
Change-Id: I8d151bfc464aae4cc1d0bd8fa993607cde25d18d
Reviewed-on: https://chromium-review.googlesource.com/c/1327524Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Katie Dillon <kdillon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606914}

third_party/blink/perf_tests/bindings/structured-clone-json-deserialize.html

@@ -5,7 +5,7 @@
 <script>
 StructuredClonePerfTestRunner.measureTimeAsync({
   description: "Measures performance of deserializing JSON-like data.",
-  data: JSON.parse(PerfTestRunner.loadFile("resources/blink-dev.json")),
+  data: JSON.parse(PerfTestRunner.loadFile("resources/data/blink-dev.json")),
   measure: "deserialize",
 });
 </script>

third_party/blink/perf_tests/bindings/structured-clone-json-serialize.html

@@ -5,7 +5,7 @@
 <script>
 StructuredClonePerfTestRunner.measureTimeAsync({
   description: "Measures performance of serializing JSON-like data.",
-  data: JSON.parse(PerfTestRunner.loadFile("resources/blink-dev.json")),
+  data: JSON.parse(PerfTestRunner.loadFile("resources/data/blink-dev.json")),
   measure: "serialize",
 });
 </script>