Preliminary Android build support (#31086)

* Android build

* Fixes
* More fixes
  - Still failing in the linking step
* More work on getting linking working

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* android: use mozjs with ndk r25c. loads servo.org

more android build fixes.

* fix ./mach run for android and make it follow logs

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* add experimental logic for compositor pause/resume

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* pass DPI from android to simpleservo

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* ci: add android workflow

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* switch to ANDROID_SDK_ROOT and ANDROID_NDK_ROOT vars

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* upgrade gradle to 4.10.1

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* upgrade to gradle 5.1.1

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* upgrade to gradle 8 and agp 8

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* make compositing work again with external present

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* android: improve mach support for non-NixOS and CI

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* fix sampler compilation bug introduced in #30490

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* ci: add android build to main workflow

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* gradle: set MinSdk = targetSdk = 30

NDK requires we compile against the minSdk API level
which is 30 in our case.

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* add instructions for android in README.md

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* apk: move servosurface to servoview

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* apk: uncomment the mediasession callbacks on MainActivity

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* apk: fix crash on MainAtivity.onDestroy

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* apk: drop VR, arm 5 and unused code

This commit drops:
* support for google, oculusvr
* support for arm5 architecture

and also removes
* fakeld scripts
* unused java code

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* cleanup shell.nix

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* android: add FIXMEs for gstreamer code

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* apk: remove commented code and debug logs

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* cleanup ServoView.java

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* mach: comment call to download gstreamer deps for android

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* disable bluetooth for jniapi as blurdroid is broken

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* fixup! README.md

* fixup! remove change in Cargo.toml

* fixup! move shell variables together

* fixup! cleanup jniapi/Cargo.toml comments

* delete commented gstreamer related android code

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* remove unused config variable in servbuild

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* android: more cleanup

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* force no_static_freetype only for android

* use actions to manage sdk, ndk and java

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* rename embedder event names to be more clear.

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* link to startup crash issue

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* fix lint issues

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* upgrade env_logger to 0.10 with duplicate exception

libservo and android_logger can use env_logger 0.10
but quickcheck is still stuck on 0.8 and has not seen
any activity in the last 2 years. This commit adds
a duplicate exception until the quickcheck dependency
can be upgraded (or replaced)

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* android: fix comments

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* disable jemalloc on android

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

* fixup! replace linux with android in cfg

---------

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>

components/profile/mem.rs

@@ -387,16 +387,16 @@ impl ReportsForest {
 //---------------------------------------------------------------------------
 
 mod system_reporter {
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     use std::ffi::CString;
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     use std::mem::size_of;
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     use std::ptr::null_mut;
 
     #[cfg(target_os = "linux")]
     use libc::c_int;
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     use libc::{c_void, size_t};
     use profile_traits::mem::{Report, ReportKind, ReporterRequest};
     use profile_traits::path;
@@ -499,10 +499,10 @@ mod system_reporter {
         None
     }
 
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     use jemalloc_sys::mallctl;
 
-    #[cfg(not(target_os = "windows"))]
+    #[cfg(not(any(target_os = "windows", target_os = "android")))]
     fn jemalloc_stat(value_name: &str) -> Option<usize> {
         // Before we request the measurement of interest, we first send an "epoch"
         // request. Without that jemalloc gives cached statistics(!) which can be
@@ -549,7 +549,7 @@ mod system_reporter {
         Some(value as usize)
     }
 
-    #[cfg(target_os = "windows")]
+    #[cfg(any(target_os = "windows", target_os = "android"))]
     fn jemalloc_stat(_value_name: &str) -> Option<usize> {
         None
     }