feat(Chromium): roll Chromium to r526987 (puppeteer#1720)

This roll includes:
- https://chromium-review.googlesource.com/c/v8/v8/+/834669
  [inspector] aligned Runtime.evaluate(returnValue:true) result with json

References puppeteer#1510.

package.json

@@ -36,7 +36,7 @@
     "ws": "^3.0.0"
   },
   "puppeteer": {
-    "chromium_revision": "524617"
+    "chromium_revision": "526987"
   },
   "devDependencies": {
     "@types/debug": "0.0.30",