Handle missing profile photos better.

There were a couple funny behaviors you could run into if you had a
contact that previously had a profile photo, but then removed it.

src/org/thoughtcrime/securesms/contacts/avatars/ProfileContactPhoto.java

@@ -9,6 +9,7 @@ import androidx.annotation.Nullable;
 import org.thoughtcrime.securesms.database.Address;
 import org.thoughtcrime.securesms.profiles.AvatarHelper;
 
+import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.security.MessageDigest;
@@ -30,7 +31,8 @@ public class ProfileContactPhoto implements ContactPhoto {
 
   @Override
   public @Nullable Uri getUri(@NonNull Context context) {
-    return Uri.fromFile(AvatarHelper.getAvatarFile(context, address));
+    File avatarFile = AvatarHelper.getAvatarFile(context, address);
+    return avatarFile.exists() ? Uri.fromFile(avatarFile) : null;
   }
 
   @Override

src/org/thoughtcrime/securesms/contactshare/ContactFieldAdapter.java

@@ -13,6 +13,7 @@ import android.widget.ImageView;
 import android.widget.TextView;
 
 import com.annimon.stream.Stream;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
 
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.contactshare.Contact.Phone;
@@ -103,7 +104,11 @@ class ContactFieldAdapter extends RecyclerView.Adapter<ContactFieldAdapter.Conta
 
       if (field.iconUri != null) {
         avatar.setVisibility(View.VISIBLE);
-        glideRequests.load(field.iconUri).circleCrop().into(avatar);
+        glideRequests.load(field.iconUri)
+                     .diskCacheStrategy(DiskCacheStrategy.NONE)
+                     .skipMemoryCache(true)
+                     .circleCrop()
+                     .into(avatar);
       } else {
         avatar.setVisibility(View.GONE);
       }

src/org/thoughtcrime/securesms/glide/ContactPhotoFetcher.java

@@ -10,6 +10,7 @@ import com.bumptech.glide.load.data.DataFetcher;
 
 import org.thoughtcrime.securesms.contacts.avatars.ContactPhoto;
 
+import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 
@@ -30,6 +31,8 @@ class ContactPhotoFetcher implements DataFetcher<InputStream> {
     try {
       inputStream = contactPhoto.openInputStream(context);
       callback.onDataReady(inputStream);
+    } catch (FileNotFoundException e) {
+      callback.onDataReady(null);
     } catch (IOException e) {
       callback.onLoadFailed(e);
     }

src/org/thoughtcrime/securesms/util/MediaUtil.java

@@ -242,8 +242,6 @@ public class MediaUtil {
   }
 
   public static boolean hasVideoThumbnail(Uri uri) {
-    Log.i(TAG, "Checking: " + uri);
-
     if (uri == null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) {
       return false;
     }