Replace deprecated getLastUsedProfile function in

PassphraseCreationDialogFragment.

|Profile#getLastUsedProfile| is deprecated and replaced with
|Profile#getLastUsedRegularProfile|. This CL updates
PassphraseCreationDialogFragment class.

Note: This change is only code clean-up, does not change any behavior.

Bug: 1041781
Change-Id: Ia9bc4d3dd37b3afed9dad99b6c52476b77810a40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2085254Reviewed-by: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Marc Treib <treib@chromium.org>
Commit-Queue: Side YILMAZ <sideyilmaz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746752}

chrome/android/java/src/org/chromium/chrome/browser/sync/ui/PassphraseCreationDialogFragment.java

@@ -78,7 +78,7 @@ public class PassphraseCreationDialogFragment extends DialogFragment {
                     public void onClick(View view) {
                         HelpAndFeedback.getInstance().show(activity,
                                 activity.getString(R.string.help_context_change_sync_passphrase),
-                                Profile.getLastUsedProfile(), null);
+                                Profile.getLastUsedRegularProfile(), null);
                     }
                 }));
     }

chrome/android/java/src/org/chromium/chrome/browser/sync/ui/PassphraseDialogFragment.java

@@ -182,10 +182,6 @@ public class PassphraseDialogFragment extends DialogFragment implements OnClickL
                 new SpanInfo("<learnmore>", "</learnmore>", new ClickableSpan() {
                     @Override
                     public void onClick(View view) {
-                        // TODO(https://crbug.com/1048632): It works correctly now, but unsafe
-                        // if sync runs in incognito mode ever. Use the current profile (i.e.,
-                        // regular profile or incognito profile) instead of always using regular
-                        // profile.
                         HelpAndFeedback.getInstance().show(getActivity(), helpContext,
                                 Profile.getLastUsedRegularProfile(), null);
                     }