Disable Android backup and restore

chrome/android/java/AndroidManifest.xml

Index: chrome/android/java/AndroidManifest.xml
diff --git a/chrome/android/java/AndroidManifest.xml b/chrome/android/java/AndroidManifest.xml
index 92bc901d29f7af458ea0ad5e73b116304aab5821..aeeeb2cc6c5215fed8eaeeaea51d34aa69b6ca96 100644
--- a/chrome/android/java/AndroidManifest.xml
+++ b/chrome/android/java/AndroidManifest.xml
@@ -112,10 +112,10 @@ by a child template that "extends" this file.
         android:icon="@mipmap/app_icon"
         android:label="@string/app_name"
         android:largeHeap="false"
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:manageSpaceActivity="@string/manage_space_activity"
         android:fullBackupContent="@xml/chromebackupscheme"
-        android:fullBackupOnly="true"
+        android:fullBackupOnly="false"
         android:restoreAnyVersion="true"
         {% block android_backup_agent %}
         android:backupAgent="org.chromium.chrome.browser.ChromeBackupAgent"