Specific issues: Tabs not being displayed, launch button pushed above top of screen

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ddfdd7aeb62362ff752eb38396d9c6353c50e4cc

commit ddfdd7aeb62362ff752eb38396d9c6353c50e4cc
Author: cco3 <cco3@chromium.org>
Date: Mon Aug 22 18:05:47 2016

Use BasicNativePage in PhysicalWebDiagnostics

The recently created BasicNativePage is perfect for
chrome://physical-web.  Moreover, it gets rid of a nasty bug which
displays things poorly on tablets.

BUG= 639349 

Review-Url: https://codereview.chromium.org/2261883002
Cr-Commit-Position: refs/heads/master@{#413476}

[modify] https://crrev.com/ddfdd7aeb62362ff752eb38396d9c6353c50e4cc/chrome/android/java/src/org/chromium/chrome/browser/ntp/NativePageFactory.java
[modify] https://crrev.com/ddfdd7aeb62362ff752eb38396d9c6353c50e4cc/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebDiagnosticsPage.java
[modify] https://crrev.com/ddfdd7aeb62362ff752eb38396d9c6353c50e4cc/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWebUma.java
[modify] https://crrev.com/ddfdd7aeb62362ff752eb38396d9c6353c50e4cc/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/Utils.java