feat(Chromium): roll Chromium to r557152 (#2522)

This roll includes:
- https://crrev.com/556783 - Headless: posttask protocol message replies.
- https://crrev.com/556881 - Reland "DevTools: change Target.disposeBrowserContext to force-close WebContents""
- https://crrev.com/556923 - DevTools: untie browser context lifetime from protocol session
- https://crrev.com/556977 - DevTools: implement Target.getBrowserContexts() method
- https://crrev.com/557085 - DevTools: fix Target.disposeBrowserContext() to work with empty contexts
- https://crrev.com/557087 - Headless: Target.disposeBrowserContext() should close context

References #85.

package.json

@@ -36,7 +36,7 @@
     "ws": "^3.0.0"
   },
   "puppeteer": {
-    "chromium_revision": "555668"
+    "chromium_revision": "557152"
   },
   "devDependencies": {
     "@types/debug": "0.0.30",