Bug 40002: Ensure system download manager is not used

components/feature/downloads/build.gradle

@@ -20,6 +20,8 @@ android {
                 arg("room.schemaLocation", "$projectDir/schemas".toString())
             }
         }
+
+        buildConfigField("boolean", "ANDROID_DOWNLOADS_INTEGRATION", "false")
     }
 
     buildTypes {

components/feature/downloads/src/main/java/mozilla/components/feature/downloads/AbstractFetchDownloadService.kt

@@ -376,7 +376,9 @@ abstract class AbstractFetchDownloadService : Service() {
                 style.notificationAccentColor
             )
             COMPLETED -> {
+                if (BuildConfig.ANDROID_DOWNLOADS_INTEGRATION) {
                     addToDownloadSystemDatabaseCompat(download.state, scope)
+                }
                 DownloadNotification.createDownloadCompletedNotification(
                     context,
                     download,
@@ -841,7 +843,9 @@ abstract class AbstractFetchDownloadService : Service() {
     }
 
     @VisibleForTesting
-    internal fun shouldUseScopedStorage() = getSdkVersion() >= Build.VERSION_CODES.Q
+    internal fun shouldUseScopedStorage() =
+            BuildConfig.ANDROID_DOWNLOADS_INTEGRATION &&
+            getSdkVersion() >= Build.VERSION_CODES.Q
 
     /**
      * Gets the SDK version from the system.

components/feature/downloads/src/main/java/mozilla/components/feature/downloads/DownloadsFeature.kt

@@ -25,7 +25,6 @@ import mozilla.components.browser.state.state.SessionState
 import mozilla.components.browser.state.state.content.DownloadState
 import mozilla.components.browser.state.store.BrowserStore
 import mozilla.components.feature.downloads.DownloadDialogFragment.Companion.FRAGMENT_TAG
-import mozilla.components.feature.downloads.manager.AndroidDownloadManager
 import mozilla.components.feature.downloads.manager.DownloadManager
 import mozilla.components.feature.downloads.manager.noop
 import mozilla.components.feature.downloads.manager.onDownloadStopped
@@ -70,7 +69,7 @@ class DownloadsFeature(
     internal val useCases: DownloadsUseCases,
     override var onNeedToRequestPermissions: OnNeedToRequestPermissions = { },
     onDownloadStopped: onDownloadStopped = noop,
-    private val downloadManager: DownloadManager = AndroidDownloadManager(applicationContext, store),
+    private val downloadManager: DownloadManager,
     private val tabId: String? = null,
     private val fragmentManager: FragmentManager? = null,
     private val promptsStyling: PromptsStyling? = null,