The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3292031f818e4443251a7a1f70c64440e01a1f45

commit 3292031f818e4443251a7a1f70c64440e01a1f45
Author: Scott Haseley <shaseley@google.com>
Date: Tue Jul 10 20:35:18 2018

RC: Add TabLoadTracker transition to UNLOADED when a tab's main frame renderer dies.

Previously when a renderer died, e.g. crash/sad tab or OOM killed on
Android, there was not a transition to UNLOADED. In these cases the
WebContents is not destroyed, so the LOADING/LOADED tab counts would be
inflated.

Bug:  861800 
Change-Id: I9d216d16d89d32a5ca11d1e1b901a1168c80d624
Reviewed-on: https://chromium-review.googlesource.com/1129373
Commit-Queue: Scott Haseley <shaseley@google.com>
Reviewed-by: François Doray <fdoray@chromium.org>
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573889}
[modify] https://crrev.com/3292031f818e4443251a7a1f70c64440e01a1f45/chrome/browser/resource_coordinator/tab_helper.cc
[modify] https://crrev.com/3292031f818e4443251a7a1f70c64440e01a1f45/chrome/browser/resource_coordinator/tab_helper.h
[modify] https://crrev.com/3292031f818e4443251a7a1f70c64440e01a1f45/chrome/browser/resource_coordinator/tab_load_tracker.cc
[modify] https://crrev.com/3292031f818e4443251a7a1f70c64440e01a1f45/chrome/browser/resource_coordinator/tab_load_tracker.h
[modify] https://crrev.com/3292031f818e4443251a7a1f70c64440e01a1f45/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f

commit 0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f
Author: Scott Haseley <shaseley@google.com>
Date: Wed Jul 25 14:54:02 2018

RC: Add tracking of UI tab count to TabLoadTracker

Tab helpers are attached to prerender web contents, and as a result
TabLoadTracker counts these web contentses as tabs. This CL adds
additional tracking of non-UI tabs and adds Get*TabUiCount() methods
that exclude non-UI tabs from counts.

This CL also modifies CoreTabHelperDelegates to notify TabLoadTracker
when tab contents are swapped. In that case, non-UI tabs are promoted to
UI tabs.

Bug:  861800 
Change-Id: I3666b17634efd1445cd24cade8514fee06ad2c92
Reviewed-on: https://chromium-review.googlesource.com/1134504
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Commit-Queue: Scott Haseley <shaseley@google.com>
Cr-Commit-Position: refs/heads/master@{#577886}
[modify] https://crrev.com/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f/chrome/browser/android/tab_android.cc
[modify] https://crrev.com/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f/chrome/browser/resource_coordinator/tab_load_tracker.cc
[modify] https://crrev.com/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f/chrome/browser/resource_coordinator/tab_load_tracker.h
[modify] https://crrev.com/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f/chrome/browser/resource_coordinator/tab_load_tracker_unittest.cc
[modify] https://crrev.com/0bbb5a9cbd82b4ae1f0ab3f04b64c6f30c56669f/chrome/browser/ui/browser.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/852475a834469a6ac06fc46dd1ce55a91202e182

commit 852475a834469a6ac06fc46dd1ce55a91202e182
Author: Scott Haseley <shaseley@google.com>
Date: Mon Aug 20 16:27:44 2018

RC: Enable TabLoadTracker unit tests on Android

TabLoadTracker unit tests were enabled only on non-Android platforms,
but TabLoadTracker is included on Android builds.

Bug:  861800 
Change-Id: I571298a10dbc5113aaabde47a8288ad675c87e8b
Reviewed-on: https://chromium-review.googlesource.com/1129461
Reviewed-by: Chris Hamilton <chrisha@chromium.org>
Commit-Queue: Scott Haseley <shaseley@google.com>
Cr-Commit-Position: refs/heads/master@{#584469}
[modify] https://crrev.com/852475a834469a6ac06fc46dd1ce55a91202e182/chrome/test/BUILD.gn