Revert "Mark APK downloads as dangerous on Android"

chrome/browser/resources/safe_browsing/download_file_types.asciipb

Index: chrome/browser/resources/safe_browsing/download_file_types.asciipb
diff --git a/chrome/browser/resources/safe_browsing/download_file_types.asciipb b/chrome/browser/resources/safe_browsing/download_file_types.asciipb
index 077cdeaababab8b6c748ae6e72ee10f4e53d2442..3b3c585574ff35b3bea9b990c67277d71649c952 100644
--- a/chrome/browser/resources/safe_browsing/download_file_types.asciipb
+++ b/chrome/browser/resources/safe_browsing/download_file_types.asciipb
@@ -8,7 +8,7 @@
 ##
 ## Top level settings
 ##
-version_id: 5
+version_id: 6
 sampled_ping_probability: 0.01
 default_file_type {
   uma_value: 18
@@ -2638,8 +2638,6 @@ file_types {
 ##
 ## Android-specific files
 ##
-# Android doesn't have real download-protection, but we can show a
-# warning to provide a speed bump for dangerous file types.
 file_types {
   extension: "dex"
   uma_value: 143
@@ -2651,12 +2649,8 @@ file_types {
   }
 }
 file_types {
+  # Android download manager checks APKs
   extension: "apk"
   uma_value: 20
   ping_setting: FULL_PING
-  platform_settings {
-    platform: PLATFORM_ANDROID
-    danger_level: ALLOW_ON_USER_GESTURE
-    auto_open_hint: DISALLOW_AUTO_OPEN
-  }
 }