Refactoring FBE APIs based on council feedback.

Mostly consists of removing the word "encryption" from most APIs,
since we can't actually make promises about the data being encrypted.

Bug: 27531029
Change-Id: Iace9d7c4e64716abf86ed11847c40f3947e1d625
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index 5b865f9..0c35573 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -113,8 +113,8 @@
     <uses-permission android:name="android.permission.CONNECTIVITY_INTERNAL" />
 
     <application android:label="@string/app_label"
-                 android:forceDeviceEncrypted="true"
-                 android:encryptionAware="true">
+                 android:defaultToDeviceProtectedStorage="true"
+                 android:directBootAware="true">
         <provider
             android:name="android.support.v4.content.FileProvider"
             android:authorities="com.android.shell"