Bug 1928334 - Handles animating activities a=dmeehan

Original Revision: https://phabricator.services.mozilla.com/D238342

Differential Revision: https://phabricator.services.mozilla.com/D238845

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/HomeActivity.kt

@@ -798,7 +798,7 @@ open class HomeActivity : LocaleAwareAppCompatActivity(), NavHostActivity {
         return false
     }
 
-    final override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
+    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
         ProfilerMarkers.addForDispatchTouchEvent(components.core.engine.profiler, ev)
         return super.dispatchTouchEvent(ev)
     }

mobile/android/fenix/app/src/main/java/org/mozilla/fenix/customtabs/ExternalAppBrowserActivity.kt

@@ -7,6 +7,7 @@ package org.mozilla.fenix.customtabs
 import android.app.assist.AssistContent
 import android.net.Uri
 import android.os.Build
+import android.view.MotionEvent
 import androidx.annotation.RequiresApi
 import androidx.annotation.VisibleForTesting
 import mozilla.components.browser.state.selector.findCustomTab
@@ -24,6 +25,8 @@ const val EXTRA_IS_SANDBOX_CUSTOM_TAB = "org.mozilla.fenix.customtabs.EXTRA_IS_S
  */
 @Suppress("TooManyFunctions")
 open class ExternalAppBrowserActivity : HomeActivity() {
+    var isFinishedAnimating = false
+
     override fun onResume() {
         super.onResume()
 
@@ -74,4 +77,17 @@ open class ExternalAppBrowserActivity : HomeActivity() {
         val currentTabUrl = getExternalTab()?.content?.url
         outContent?.webUri = currentTabUrl?.let { Uri.parse(it) }
     }
+
+    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
+        if (!isFinishedAnimating) {
+            return true
+        }
+
+        return super.dispatchTouchEvent(ev)
+    }
+
+    override fun onEnterAnimationComplete() {
+        super.onEnterAnimationComplete()
+        isFinishedAnimating = true
+    }
 }