(Looks like  issue 415784  but re-opening a new bug as that one was closed a while ago)

(1) Copy paste works inconsistently across platforms on SSL error pages -- Doesn't work on Mac, but work on Windows.

(2) Right click context menu is uniformly broken across platforms. Is disabling it intentional? From an accessibility standpoint this seems undesirable, and breaks one of my uses.

Both of these are inconsistent with the other network error pages, where copy-paste works as expected, as does the idiomatic platform context menu.

This is especially a problem when trying to copy details on error pages such as the PEM chain. Having had to do this recently I had to pop into the devtools (and couldn't use the context menu to get to it either) to get the text.

Tested on Chrome:
 * 56.0.2924.87 (current stable)
 * 58.0.3008.0 (current canary)

Repro: https://sha1-2016.badssl.com/

* Mac: copy doesn't work:
    * Keyboard: Command-C  [doesn't work]
    * Menu: Edit->Copy     [doesn't work]
    * Mouse: Right click doesn't open context menu

* Windows: copy works through keyboard shortcut, but not able to right click for context menu.

* Linux: same behavior as Windows.

* Android: (tested using M55) you can select text on the error page, and the "Copy" option even appears, however it doesn't work. By contrast it works as expected on other error pages.

* Chrome OS: Did not test.
* iOS: Did not test.


My expectation is for copy to work as on other network error pages, namely:
  https://rc4-md5.badssl.com/

Here copy works through keyboard shortcut on Desktop, and text selection on Android. Moreover it is possible to open a context menu.

I am not sure whether these limitations were intentional, but if they were it doesn't seem correct -- functionality exposed by right click like devtools can still be accessed, and copy can still be accessed on Windows in case the desire was to block it.