Add an exported flag in manifest

With b/150232615, we will need an explicit value set for the exported
flag when intent filters are present, as the default behavior is
changing for S+. This change adds the value reflecting the previous
default to the manifest.

These changes were made using an automated tool, the xml file may be
reformatted slightly creating a larger diff. The only "real" change is
the addition of "android:exported" to activities, services, and
receivers that have one or more intent-filters.

Bug: 150232615
Test: TH
Exempt-From-Owner-Approval: mechanical refactoring
Change-Id: If1d6533b70358b592ffedcb486559c9d1a0aa705
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 998a95f..d379dfa 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -127,6 +127,7 @@
             android:theme="@android:style/Theme.Translucent"
             android:label="@string/android_beam"
             android:noHistory="true"
+            android:exported="true"
             android:excludeFromRecents="true">
             <intent-filter>
                 <action android:name="android.intent.action.SEND" />
@@ -153,7 +154,8 @@
             android:process=":beam"
         />
 
-        <receiver android:name=".NfcBootCompletedReceiver">
+        <receiver android:name=".NfcBootCompletedReceiver"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>