Use larger vector graphics for special tiles and fix selection ring.

chrome/android/java/res/drawable/checkmark_blue.xml

Index: chrome/android/java/res/drawable/checkmark_blue.xml
diff --git a/chrome/android/java/res/drawable/checkmark_blue.xml b/chrome/android/java/res/drawable/checkmark_blue.xml
new file mode 100644
index 0000000000000000000000000000000000000000..2f74dcf7d3ce4021ea8b3939198bbc28d835e27d
--- /dev/null
+++ b/chrome/android/java/res/drawable/checkmark_blue.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:targetApi="21"
+    android:width="20dp"
+    android:height="20dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="@color/black_alpha_20"
+        android:pathData="M13,13m-10,0a10,10 0,1 1,20 0a10,10 0,1 1,-20 0"/>
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M4 6H20v12H4z" />
+    <path
+        android:fillColor="@color/google_blue_500"
+        android:pathData="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z" />
+</vector>