[Nearby] Use profile from the share sheet controller

Bug: b:154865204
Change-Id: I0edd7de777ecdcade982e9dadb30449d0c4b5b77
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2385875Reviewed-by: Ryan Hansberry <hansberry@chromium.org>
Commit-Queue: James Vecore <vecore@google.com>
Cr-Commit-Position: refs/heads/master@{#803162}

chrome/browser/nearby_sharing/sharesheet/nearby_share_action.cc

@@ -99,8 +99,7 @@ void NearbyShareAction::LaunchAction(
   gfx::Size size = ComputeSize();
   controller->SetSharesheetSize(size.width(), size.height());
 
-  // TODO(vecore): SharesheetController will eventually provide the profile.
-  auto* profile = ProfileManager::GetLastUsedProfileAllowedByPolicy();
+  auto* profile = controller->GetProfile();
   auto view = std::make_unique<views::WebView>(profile);
   // If this is not done, we don't see anything in our view.
   view->SetPreferredSize(size);