[Sony Xperia Z Ultra] xGryph:
A bit of further information, I managed to get through the setup without creating an account. When trying to create an account in settings I get the following error:

8-07 15:51:32.837 10340 10436 I OpenGLRenderer: Initialized EGL, version 1.4
08-07 15:51:33.065 913 1008 D ConnectivityService: updateNetworkScore for NetworkAgentInfo [WIFI () - 100] to 56
08-07 15:51:33.074 913 932 I ActivityManager: Displayed com.google.android.gms/.auth.uiflows.addaccount.PreAddAccountActivity: +690ms (total +1s305ms)
08-07 15:51:33.094 913 1430 I ActivityManager: START u0 {flg=0x2000000 cmp=com.google.android.gms/.auth.uiflows.minutemaid.MinuteMaidActivity (has extras)} from uid 10011 on display 0
08-07 15:51:33.227 10340 10340 E WebViewFactory: Chromium WebView package does not exist
08-07 15:51:33.227 10340 10340 E WebViewFactory: android.webkit.WebViewFactory$MissingWebViewPackageException: android.content.pm.PackageManager$NameNotFoundException: com.android.webview
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.webkit.WebViewFactory.fetchPackageInfo(WebViewFactory.java:109)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.webkit.WebViewFactory.getProviderClass(WebViewFactory.java:183)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.webkit.WebViewFactory.getProvider(WebViewFactory.java:158)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.webkit.CookieManager.getInstance(CookieManager.java:39)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at gbm.a(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.google.android.gms.auth.uiflows.addaccount.AbstractBrowserSignInFragment.onCreateView(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.google.android.chimera.FragmentProxy.onCreateView(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fh.a(:com.google.android.gms:5)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.a(:com.google.android.gms:318)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.c(:com.google.android.gms:29)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.a(:com.google.android.gms:210)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at ey.l(:com.google.android.gms:11)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.b(:com.google.android.gms:13)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.a(:com.google.android.gms:119)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.b(:com.google.android.gms:8)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fy.j(:com.google.android.gms:3)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at ft.b(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at fo.onStart(:com.google.android.gms:4)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at btx.superOnStart(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.google.android.chimera.Activity.onStart(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.google.android.chimera.Activity.publicOnStart(:com.google.android.gms:0)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at btx.onStart(:com.google.android.gms:2)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.Activity.performStart(Activity.java:6268)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ActivityThread.-wrap11(ActivityThread.java)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.os.Handler.dispatchMessage(Handler.java:102)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.os.Looper.loop(Looper.java:148)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ActivityThread.main(ActivityThread.java:5417)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at java.lang.reflect.Method.invoke(Native Method)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
08-07 15:51:33.227 10340 10340 E WebViewFactory: Caused by: android.content.pm.PackageManager$NameNotFoundException: com.android.webview
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:137)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	at android.webkit.WebViewFactory.fetchPackageInfo(WebViewFactory.java:107)
08-07 15:51:33.227 10340 10340 E WebViewFactory:	... 33 more
08-07 15:51:33.227 10340 10340 D AndroidRuntime: Shutting down VM