Revert implementation of AboutLibraries.

This will be done in a separate PR: #13767

app/build.gradle

@@ -7,7 +7,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'jacoco'
 apply plugin: 'androidx.navigation.safeargs.kotlin'
-apply plugin: 'com.mikepenz.aboutlibraries.plugin'
+apply plugin: 'com.google.android.gms.oss-licenses-plugin'
 
 
 import com.android.build.OutputFile
@@ -348,7 +348,7 @@ dependencies {
     implementation Deps.androidx_coordinatorlayout
 
     implementation Deps.sentry
-    implementation Deps.aboutlibraries
+    implementation Deps.osslicenses_library
 
     implementation Deps.mozilla_concept_engine
     implementation Deps.mozilla_concept_menu

app/src/main/java/org/mozilla/fenix/settings/about/AboutFragment.kt

@@ -13,7 +13,7 @@ import android.view.ViewGroup
 import androidx.core.content.pm.PackageInfoCompat
 import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.DividerItemDecoration
-import com.mikepenz.aboutlibraries.LibsBuilder
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import kotlinx.android.synthetic.main.fragment_about.*
 import org.mozilla.fenix.BrowserDirection
 import org.mozilla.fenix.BuildConfig
@@ -119,7 +119,7 @@ class AboutFragment : Fragment(), AboutPageListener {
     private fun populateAboutList(): List<AboutPageItem> {
         val context = requireContext()
 
-        return listOfNotNull(
+        return listOf(
             AboutPageItem(
                 AboutItem.ExternalLink(
                     WHATS_NEW,
@@ -168,11 +168,13 @@ class AboutFragment : Fragment(), AboutPageListener {
     }
 
     private fun openLibrariesPage() {
-        val ctx = context
-        if (ctx != null) {
-            val title = getString(R.string.open_source_licenses_title, appName)
-            LibsBuilder().withAboutAppName(title).start(ctx)
-        }
+        startActivity(Intent(context, OssLicensesMenuActivity::class.java))
+        OssLicensesMenuActivity.setActivityTitle(
+            getString(
+                R.string.open_source_licenses_title,
+                appName
+            )
+        )
     }
 
     override fun onAboutItemClicked(item: AboutItem) {

build.gradle

@@ -62,22 +62,13 @@ buildscript {
         classpath Deps.tools_kotlingradle
         classpath Deps.androidx_safeargs
         classpath Deps.allopen
-        classpath Deps.aboutlibraries_plugin
+        classpath Deps.osslicenses_plugin
 
         classpath "org.mozilla.components:tooling-glean-gradle:${Versions.mozilla_android_components}"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
     }
-
-    // AboutLibraries depends on Android gradle plugin 4.0+, but we can't update it for now
-    // It should be safe to remove this block once android gradle plugin is updated
-    // See https://github.com/mozilla-mobile/fenix/issues/13262
-    configurations.classpath {
-        resolutionStrategy {
-            force Deps.tools_androidgradle
-        }
-    }
 }
 
 plugins {

buildSrc/src/main/java/Dependencies.kt

@@ -9,7 +9,8 @@ object Versions {
     const val sentry = "1.7.10"
     const val leakcanary = "2.4"
     const val leanplum = "5.4.0"
-    const val aboutlibraries = "8.3.0"
+    const val osslicenses_plugin = "0.9.5"
+    const val osslicenses_library = "17.0.0"
     const val detekt = "1.9.1"
 
     const val androidx_appcompat = "1.2.0-rc01"
@@ -57,8 +58,8 @@ object Deps {
     const val kotlin_coroutines_android = "org.jetbrains.kotlinx:kotlinx-coroutines-android:${Versions.coroutines}"
 
     const val allopen = "org.jetbrains.kotlin:kotlin-allopen:${Versions.kotlin}"
-    const val aboutlibraries = "com.mikepenz:aboutlibraries:${Versions.aboutlibraries}"
-    const val aboutlibraries_plugin = "com.mikepenz.aboutlibraries.plugin:aboutlibraries-plugin:${Versions.aboutlibraries}"
+    const val osslicenses_plugin = "com.google.android.gms:oss-licenses-plugin:${Versions.osslicenses_plugin}"
+    const val osslicenses_library = "com.google.android.gms:play-services-oss-licenses:${Versions.osslicenses_library}"
 
     const val mozilla_concept_engine = "org.mozilla.components:concept-engine:${Versions.mozilla_android_components}"
     const val mozilla_concept_menu = "org.mozilla.components:concept-menu:${Versions.mozilla_android_components}"