[ProfileCard] Fix layout error

After inherit from TextBubble, the ProfileCardView is no longer a view, so it can't be the label of the layout file.

Change-Id: I79f0785eac13b33c3ab572d8cac0e78b2a26e6ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2092216Reviewed-by: sebsg <sebsg@chromium.org>
Commit-Queue: Tina Wang <tinazwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#747949}

chrome/browser/profile_card/android/internal/java/res/layout/profile_card.xml

@@ -3,7 +3,7 @@
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
-<org.chromium.chrome.browser.profile_card.ProfileCardView
+<LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/profile_card"
     android:layout_width="match_parent"
@@ -36,4 +36,4 @@
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         layout="@layout/content_preview_posts_container" />
-</org.chromium.chrome.browser.profile_card.ProfileCardView>
+</LinearLayout>

chrome/browser/profile_card/android/internal/java/src/org/chromium/chrome/browser/profile_card/ProfileCardView.java

@@ -58,7 +58,7 @@ public class ProfileCardView extends TextBubble {
     }
 
     void setAvatarBitmap(Bitmap avatarBitmap) {
-        mAvatarView.setImageBitmap(avatarBitmap);
+        if (avatarBitmap != null) mAvatarView.setImageBitmap(avatarBitmap);
     }
 
     void setTitle(String title) {