For mozilla-mobile#15279: LazyMonitored implement Lazy + update built…

…-in API use.

By having LazyMonitored implement Lazy, we can continue to pass these
values directly into the ac APIs that require Lazy references. For some
reason, implementing `Lazy.value` can replace `operator fun getValue`
required for delegates.

app/src/main/java/org/mozilla/fenix/components/Core.kt

@@ -293,14 +293,14 @@ class Core(
     // Use these for startup-path code, where we don't want to do any work that's not strictly necessary.
     // For example, this is how the GeckoEngine delegates (history, logins) are configured.
     // We can fully initialize GeckoEngine without initialized our storage.
-    val lazyHistoryStorage = lazy { PlacesHistoryStorage(context, crashReporter) }
-    val lazyBookmarksStorage = lazy { PlacesBookmarksStorage(context) }
-    val lazyPasswordsStorage = lazy { SyncableLoginsStorage(context, passwordsEncryptionKey) }
+    val lazyHistoryStorage = lazyMonitored { PlacesHistoryStorage(context, crashReporter) }
+    val lazyBookmarksStorage = lazyMonitored { PlacesBookmarksStorage(context) }
+    val lazyPasswordsStorage = lazyMonitored { SyncableLoginsStorage(context, passwordsEncryptionKey) }
 
     /**
      * The storage component to sync and persist tabs in a Firefox Sync account.
      */
-    val lazyRemoteTabsStorage = lazy { RemoteTabsStorage() }
+    val lazyRemoteTabsStorage = lazyMonitored { RemoteTabsStorage() }
 
     // For most other application code (non-startup), these wrappers are perfectly fine and more ergonomic.
     val historyStorage by lazyMonitored { lazyHistoryStorage.value }

app/src/main/java/org/mozilla/fenix/perf/LazyMonitored.kt

@@ -27,7 +27,7 @@ fun <T> lazyMonitored(initializer: () -> T) = LazyMonitored(initializer)
  * For example, we can count the number of components initialized to see how the number of
  * components initialized on start up impacts start up time.
  */
-class LazyMonitored<T>(initializer: () -> T) {
+class LazyMonitored<T>(initializer: () -> T) : Lazy<T> {
     // Lazy is thread safe.
     private val lazyValue = lazy {
         // We're unlikely to have 4 billion components so we don't handle overflow.
@@ -40,5 +40,6 @@ class LazyMonitored<T>(initializer: () -> T) {
         }
     }
 
-    operator fun getValue(thisRef: Any?, property: KProperty<*>): T = lazyValue.value
+    override val value: T get() = lazyValue.value
+    override fun isInitialized(): Boolean = lazyValue.isInitialized()
 }