Use rounded image view for Answer and Entity suggestions

This change updates the looks of the Answer- and Entity suggestions to
match the design:

http://docs/presentation/d/1uB8QFlhYqQetxNgJxucpKn-Eolx7CiqL88jGES_sjFk?pli=1#slide=id.g45b058cd36_0_146
http://docs/presentation/d/1uB8QFlhYqQetxNgJxucpKn-Eolx7CiqL88jGES_sjFk?pli=1#slide=id.g3ce78ec162_0_50

Bug: 930349
Change-Id: I7fa62d6349ee7b30b44a4c28a4a0dfd82e1f33ba
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1632902
Commit-Queue: Ender <ender@google.com>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664510}

chrome/android/java/res/layout/omnibox_answer_suggestion.xml

@@ -22,7 +22,8 @@
         android:layout_toStartOf="@+id/omnibox_answer_refine_icon"
         android:layout_width="0dp">
 
-        <ImageView
+        <org.chromium.ui.widget.RoundedCornerImageView
+            style="@style/RoundedCornerImageViewDefault"
             android:contentDescription="@null"
             android:id="@+id/omnibox_answer_icon"
             android:layout_centerVertical="true"

chrome/android/java/res/layout/omnibox_entity_suggestion.xml

@@ -20,14 +20,15 @@
         android:focusable="true"
         android:paddingVertical="10dp">
 
-        <ImageView
+    <org.chromium.ui.widget.RoundedCornerImageView
+            style="@style/RoundedCornerImageViewDefault"
             android:id="@+id/omnibox_entity_image"
             android:layout_width="@dimen/omnibox_suggestion_entity_icon_size"
             android:layout_height="@dimen/omnibox_suggestion_entity_icon_size"
             android:layout_centerVertical="true"
             android:layout_marginEnd="8dp"
             android:layout_marginStart="@dimen/omnibox_suggestion_icon_margin_start"
-            android:contentDescription="@null" />
+            android:contentDescription="@null"/>
 
         <TextView
             android:id="@+id/omnibox_entity_subject_text"

chrome/android/java/res/values-v17/styles.xml

@@ -3,7 +3,8 @@
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
-<resources xmlns:tools="http://schemas.android.com/tools">
+<resources
+  xmlns:tools="http://schemas.android.com/tools">
     <!-- Q: Why put style resources under values-v17/ ?
          A: Problem:
             1. paddingStart causes a crash on Galaxy Tab&Note b/8351339.
@@ -929,4 +930,10 @@
         <item name="android:layout_height">@dimen/omnibox_suggestion_edit_url_min_height</item>
         <item name="tint">@color/default_icon_color</item>
     </style>
+    <style name="RoundedCornerImageViewDefault">
+      <item name="cornerRadiusTopStart">@dimen/default_rounded_corner_radius</item>
+      <item name="cornerRadiusTopEnd">@dimen/default_rounded_corner_radius</item>
+      <item name="cornerRadiusBottomStart">@dimen/default_rounded_corner_radius</item>
+      <item name="cornerRadiusBottomEnd">@dimen/default_rounded_corner_radius</item>
+    </style>
 </resources>