Steps to reproduce the problem:
1. Think you be doing something with tabs.
2. Inadvertently manage a long press on 'x', then drift to the "close all tabs" now open immediately below current tap point.
3. Lose hours, days, weeks, or months worth of curated content.

What is the expected behavior?
User state should not be inadvertently and irrevocably lost.  State-destruction actions should be resistant to inadvertent activation, confirm action, and offer an undo capability.

What went wrong?
2-3 months of user state lost as a result of an unsteady hand late in the day on a laggy tablet with craptacular touch registration at the best of times.

Did this work before? N/A 

Chrome version: 53.0.2785.124  Channel: n/a
OS Version: 5.0.2
Flash Version: 

Chromium failed to follow its own suggestions for a sane UI.  See @dtrainor's comments:  https://bugs.chromium.org/p/chromium/issues/detail?id=268157#c46

"It's a really destructive option so putting it in the main menu is scary (even if we could convince UX and tie in undo). Long press sounds interesting but I don't know what would be discoverable enough."

So far as I can tell, there's no "undo" option.

Compounding factors:

1. Android has a tremendous problem distinguishing "click" from "drag".  Or in this case "long touch" from "drag".

2. Touchscreen device position registration is shakey at best.

I'm out about 2-3 months of accumulated state.

The meta-problem is that Chrome/Android has terrible state and tab management.  It's painfully difficult to navigate or search tabs, so tab debt accrues:
https://bugs.chromium.org/p/chromium/issues/detail?id=268157#c14

In lieu of solving that straight off, not fucking blowing away months of user work, and offering reasonable mechanisms for restoring _prior browsing state_ would be useful.

"Recent tabs" doesn't begin to address this.

"History" shows URLs _in the order they were opened_, which has little if any relationship to the state of tabs within a browsing session.  It's not possible to select sets of URLs for bulk action (e.g., "open selected URLs in new tabs).

Move the fucking "close all tabs" item elsewhere, or move the activation button *somewhere other than immediately next to the current touch point*.  Require a verification *someplace distinctly elsewhere on the screen* for the action.  Offer an "undo" capability.

Implementing "close all tabs" as "reduce to a single blank tab" rather than "delete all tabs and close app" would offer a better option for prompting for an undo/restore option.  (Or, possibly, a "clear full history").  Alternatively, a "restore previous session" option would address the undo requirement.  And probably should have been the initial design.

This user is less than gruntled.

https://plus.google.com/104092656004159577193/posts/LXYChDt6ts1