Add Win_7 and Win_10 tags

Bug: 868306
Change-Id: I211019451b72a743e306c736241aea27a5d2accc
Reviewed-on: https://chromium-review.googlesource.com/1175430Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#583222}

tools/perf/expectations.config

@@ -6,6 +6,7 @@
 # tags: Android_Webview Android_but_not_webview Mac Win Linux
 # tags: ChromeOS Android Desktop Nexus_5 Nexus_5X Nexus_6P
 # tags: Nexus_7 Mac_10.11 Mac_10.12 Nexus6_Webview Nexus5X_Webview
+# tags: Win_7 Win_10
 
 # Benchmark: blink_perf.canvas
 crbug.com/593973 [ Android_Svelte ] blink_perf.canvas/* [ Skip ]