Remove PlzNavigate mentions in components/

This CL removes all of the references to PlzNavigate in the comments of
components/.

Change-Id: I5ab774c0c1f5c5ed4d803f64c08b8611404e8073
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1729084Reviewed-by: Bartosz Fabianowski <bartfab@chromium.org>
Commit-Queue: Arthur Hemery <ahemery@chromium.org>
Cr-Commit-Position: refs/heads/master@{#683952}

components/policy/content/policy_blacklist_navigation_throttle.cc

@@ -35,8 +35,8 @@ content::NavigationThrottle::ThrottleCheckResult
 PolicyBlacklistNavigationThrottle::WillStartRequest() {
   GURL url = navigation_handle()->GetURL();
 
-  // Ignore blob scheme because PlzNavigate may use it to deliver navigation
-  // responses to the renderer process.
+  // Ignore blob scheme because we may use it to deliver navigation responses
+  // to the renderer process.
   if (url.SchemeIs(url::kBlobScheme))
     return PROCEED;
 

components/policy/core/browser/url_blacklist_manager.cc

@@ -492,7 +492,7 @@ void URLBlacklistManager::SetBlacklist(
 bool URLBlacklistManager::IsURLBlocked(const GURL& url) const {
   DCHECK(ui_task_runner_->RunsTasksInCurrentSequence());
   // Ignore blob scheme for two reasons:
-  // 1) PlzNavigate uses it to deliver the response to the renderer.
+  // 1) Its used to deliver the response to the renderer.
   // 2) A whitelisted page can use blob URLs internally.
   return !url.SchemeIs(url::kBlobScheme) && blacklist_->IsURLBlocked(url);
 }