[Android][IdentityDisc] Small refactoring for IdentityDiscController

This CL is a small refactoring of the class IdentityDiscController.

Bug: 1127886
Change-Id: I00cca9a945c5fab454a4b0c4678173b9874ff57e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2410490
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#807911}

chrome/android/java/src/org/chromium/chrome/browser/identity_disc/IdentityDiscController.java

@@ -165,9 +165,7 @@ public class IdentityDiscController implements NativeInitObserver, ProfileDataCa
         }
 
         String email = CoreAccountInfo.getEmailFrom(getSyncAccountInfo());
-        boolean canShowIdentityDisc = email != null;
-
-        mState = !canShowIdentityDisc ? IdentityDiscState.NONE : IdentityDiscState.SMALL;
+        mState = email == null ? IdentityDiscState.NONE : IdentityDiscState.SMALL;
         ensureProfileDataCache(email, mState);
 
         if (mState != IdentityDiscState.NONE) {