Bug 1624410 - Add WebExtension.MetaData.temporary. r=esawin,snorp

This allows embedders to know when an extension is installed temporarily so
that they can allow it even if they would normally do it (e.g. for extensions
installed with web-ext).

Differential Revision: https://phabricator.services.mozilla.com/D91071

mobile/android/geckoview/api.txt

@@ -1684,6 +1684,7 @@ package org.mozilla.geckoview {
     field @NonNull public final String[] origins;
     field @NonNull public final String[] permissions;
     field public final int signedState;
+    field public final boolean temporary;
     field @NonNull public final String version;
   }
 

mobile/android/geckoview/src/main/java/org/mozilla/geckoview/WebExtension.java

@@ -1658,6 +1658,12 @@ public class WebExtension {
          */
         public final boolean enabled;
 
+        /**
+         * Whether this extension is temporary or not. Temporary extensions are not retained
+         * and will be uninstalled when the browser exits.
+         */
+        public final boolean temporary;
+
         /** Override for testing. */
         protected MetaData() {
             icon = null;
@@ -1676,6 +1682,7 @@ public class WebExtension {
             signedState = SignedStateFlags.UNKNOWN;
             disabledFlags = 0;
             enabled = true;
+            temporary = false;
             baseUrl = null;
             allowedInPrivateBrowsing = false;
         }
@@ -1695,6 +1702,7 @@ public class WebExtension {
             isRecommended = bundle.getBoolean("isRecommended");
             blocklistState = bundle.getInt("blocklistState", BlocklistStateFlags.NOT_BLOCKED);
             enabled = bundle.getBoolean("enabled", false);
+            temporary = bundle.getBoolean("temporary", false);
             baseUrl = bundle.getString("baseURL");
             allowedInPrivateBrowsing = bundle.getBoolean("privateBrowsingAllowed", false);
 

mobile/android/geckoview/src/main/java/org/mozilla/geckoview/doc-files/CHANGELOG.md

@@ -14,6 +14,11 @@ exclude: true
 ⚠️  breaking change and deprecation notices
 
 ## v83
+- Added [`WebExtension.MetaData.temporary`][83.1] which exposes whether an extension
+  has been installed temporarily, e.g. when using web-ext.
+  ([bug 1624410]({{bugzilla}}1624410))
+
+[83.1]: {{javadoc_uri}}/WebExtension.MetaData.html#temporary
 
 ## v82
 - ⚠️  [`WebNotification.source`][79.2] is now `@Nullable` to account for
@@ -803,4 +808,4 @@ to allow adding gecko profiler markers.
 [65.24]: {{javadoc_uri}}/CrashReporter.html#sendCrashReport-android.content.Context-android.os.Bundle-java.lang.String-
 [65.25]: {{javadoc_uri}}/GeckoResult.html
 
-[api-version]: e62341ace2541ae9fbd4f08f7c2d03ba28bf416a
+[api-version]: 8a8ae9a25f36172359421f78ec83bb8613621541

mobile/android/modules/geckoview/GeckoViewWebExtension.jsm

@@ -282,6 +282,7 @@ async function exportExtension(aAddon, aPermissions, aSourceURI) {
     blocklistState,
     userDisabled,
     embedderDisabled,
+    temporarilyInstalled,
     isActive,
     isBuiltin,
     id,
@@ -319,6 +320,7 @@ async function exportExtension(aAddon, aPermissions, aSourceURI) {
       promptPermissions,
       description,
       enabled: isActive,
+      temporary: temporarilyInstalled,
       disabledFlags,
       version,
       creatorName,