Make <button> hit testing similar to other elements

See merge request !188

This is a backported version of the fix for mozilla bug 1089326: "make
<button> hit testing similar to other elements which may have some
content, and for click target find the common (interactive) ancestor,
r=masayuki"

See https://hg.mozilla.org/mozilla-central/rev/36b949bef798

Essentially it makes hit targetting of the <button> element the same as
for other elements. Previously only the button element itself could be
the target, even for hits on its children. This change makes it so that
the children can be targets as well (so select, hover, etc. can be
captured by them as well).

This patch should be removed after the upgrade to ESR68.

[sailfishos][gecko] Buffer when the video decoder lags behind. Fixes JB#51730

See merge request !194

MediaFormatReader assumes that decoders will only process one frame at a
 time, so it won't provide the extra frames that droidmedia needs when
 the stream switches to a higher resolution. For non-adaptive streams,
 preroll will make sure there's already enough of a lag.

If we run out of decoded frames, then enter the buffering state even if
we're waiting for the decoder. Stay in that state until we have ample
frames again.

[sailfishos][embedlite] Fix nsILoginManagerPrompter initialization. Fixes JB#52069

See merge request !193

[sailfishos][gecko] Revert 'Apply UA override for window.navigator.'. Fixes JB#51958

See merge request !192

This causes other problems, and can be tackled later on in an overhaul of the UA override.

[sailfishos][embedlite] Guard PuppetWidgetBase use after destruction. JB#50272

See merge request !190

Includes cleanup logc logs

Original commit in sailfishos-esr52 branch SHA1: 55747526

Fix aarch64 build

See merge request !189

The --disable-elf-hack option is not available on aarch64.

Mozilla Bug 1518557 - Enable MOZ_GECKO_PROFILER on Android x86_64. SHA1: 5e1f5eaca79b76e5e668f6a77fe389922967a241
Mozilla Bug 1450185 - Implement DWARF stack walker for aarch64. SHA1 7f841de419bb025413672e91eb9de32328dbd331

[sailfishos][gecko] Hardcode loopback address for profile lock filename. JB#45654

See merge request !186

When engine started without network PR_GetHostByName takes 20seconds
when connman tries to resolve host name. As this is only used as part of the
profile lock filename it can as well be like "127.0.0.1:+<pid>".

[sailfishos][embedlite] Do not force online when loading url. JB#45654

See merge request !185

[sailfishos][embedlite] Enable decoder recycling. JB#51730

See merge request !187

Needed for switching streams promptly without having to spin up
a new decoder.

[sailfishos][gecko] Force recycling of gmp-droid instances. JB#51730

See merge request !184

Android codecs hog a lot of frames, so creating a new one during playback when
the stream switches will cause lag and playback failure. These codecs are
capable of switching streams internally, so flag gmp-droid as supporting
decoder recycling.

[sailfishos][ogg] Restore thumb disabling fix. Fixes JB#51837

See merge request !182

Also backport a patch from esr68 that causes a build failure in non-Android ARM builds with thumb disabled.

Ensure audio continues when screen is locked

See merge request !177

This rationalises two previous commits from sailfishos-esr52,
integrating the functionality of the NemoResourceHandler class into
MediaDecoder.

This is needed so that the "media-decoder-info" notifications are sent
out when certain types of media are started/stopped and to signal
whether the media contains audio and/or video.

An additional change ensures media is started/stopped with the
Thaw/Freeze of docuemnts (switching the check from visible status to
hidden status).

The previous relevant commits:-

commit 9e2dc6c8
Author: Oleg <romaxa@gmail.com>
Date:   Thu Oct 30 23:54:05 2014 -0700

    [sailfishos][media] Add NemoResourceHandler

    Original SHA1: b318b3c9Signed-off-by: Raine Makelainen <raine.makelainen@jolla.com>

commit 50fc4fac
Author: Andrew den Exter <andrew.den.exter@qinetic.com.au>
Date:   Thu Nov 29 17:20:06 2018 +1000

    [sailfishos][media] Update media resource state when the playing
state changes for any reason. Fixes JB#42900

Getting the nsPIDOMWindowInner from its nsPIDOMWindowOuter previously
involved performing a QueryInterface. This is no longer the case
(GetCurrentInnerWindow() is used instead) which was causing the Freeze()
and Thaw() requests to exit early (when a null interface was returned).

This change fixes this.

[sailfishos][gecko] Apply UA override for window.navigator. Fixes JB#51824

See merge request !180

Do not return just the "general.useragent.override" rather let the
http protocol handler to resolve possible override.

To be noted that with this change "privacy.resistFingerprinting"
will keep working if used.
Signed-off-by: Raine Makelainen <raine.makelainen@jolla.com>

[sailfishos][gmp-droid] Remove specific gmp-droid support. JB#51206

See merge request !147

We'll load it with MOZ_GMP_PATH to make it more portable between Gecko versions. Leaving the default loading in causes warnings on startup.

Cleanup preferences

See merge request !179

[sailfishos][configure] Disable marionette. Contributes to JB#51685

See merge request !178

Map Suspend/Resume to Freeze/Thaw respectively

See merge request !175

This reverses the mapping, since it was previously set the wrong way
around.

The original mapping was introduced in commit
8a5b8fb3 when nsPIDOMWindow was changed
to nsPIDOMWindowInner and the interface switched from using
SuspendTimeouts() and ResumeTimeouts() to Freeze() and Thaw().

[sailfishos][embedlite] Platform info fix for out of memory errors. Fixes JB#51363

See merge request !174