Restore calling identity when exception is thrown

MediaProvider#updateInternal parses uri that can throw
NumberFormatException after which calling identity is not restored.

MediaProvider#getResultForGetMediaUri can throw
IllegalArguementException if documentUri's authority is incorrect, after
which calling identity is not restored.

Bug: 417195606
Bug: 418225717
Test: EXEMPT bugfix
Flag: EXEMPT bugfix
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:bb834ffbc6bbede6ca1ad49ca1301e6e567c551b)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:b92a39f830516b5e9a1e5ba529e8f9ba0380ada3)
Cherrypick-From: https://googleplex-android-review.googlesource.com/q/commit:9c184d461fd647178bea74450cf4c3e2643f9527
Merged-In: Ia295e56530a44c437db3a159e97c12d1a239b547
Change-Id: Ia295e56530a44c437db3a159e97c12d1a239b547

src/com/android/providers/media/MediaProvider.java

diff --git a/src/com/android/providers/media/MediaProvider.java b/src/com/android/providers/media/MediaProvider.java
index 2872e4a..46e961b 100644
--- a/src/com/android/providers/media/MediaProvider.java
+++ b/src/com/android/providers/media/MediaProvider.java
@@ -7674,6 +7674,7 @@
 
         if (!authority.equals(MediaDocumentsProvider.AUTHORITY)
                 && !authority.equals(DocumentsContract.EXTERNAL_STORAGE_PROVIDER_AUTHORITY)) {
+            restoreCallingIdentity(token);
             throw new IllegalArgumentException("Provider for this Uri is not supported.");
         }
 
@@ -8978,8 +8979,15 @@
             }
 
             final LocalCallingIdentity token = clearLocalCallingIdentity();
-            final Uri genericUri = MediaStore.Files.getContentUri(volumeName,
-                    ContentUris.parseId(uri));
+
+            final Uri genericUri;
+            try {
+                genericUri = MediaStore.Files.getContentUri(volumeName, ContentUris.parseId(uri));
+            } catch (NumberFormatException e) {
+                restoreLocalCallingIdentity(token);
+                throw e;
+            }
+
             try (Cursor c = queryForSingleItem(genericUri,
                     sPlacementColumns.toArray(new String[0]), userWhere, userWhereArgs, null)) {
                 for (int i = 0; i < c.getColumnCount(); i++) {