Remove allowSwitchSyncAccount argument from creating a sync settings nav controller.

This CL removes allowSwitchSyncAccount argument from creating a settings nav controller
having sync as its root view controller as it is always set to YES.

Bug: NONE
Change-Id: I207a841cc2941a5ad5cf546e5914be5f3ce53f77
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1620635
Commit-Queue: Mihai Sardarescu <msarda@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Cr-Commit-Position: refs/heads/master@{#661705}
3 files changed