[Payments] Add UI elements to secure branding for payments

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

Index: chrome/android/java/res/layout/payment_request_header.xml
diff --git a/chrome/android/java/res/layout/payment_request_header.xml b/chrome/android/java/res/layout/payment_request_header.xml
index aa227a25027cca6d9c9a545b202be55dd22d5582..2c6a84d644c3d4e79ab9287829ab56b82bd6ba2f 100644
--- a/chrome/android/java/res/layout/payment_request_header.xml
+++ b/chrome/android/java/res/layout/payment_request_header.xml
@@ -30,8 +30,8 @@
             android:id="@+id/page_info"
             android:layout_height="wrap_content"
             android:layout_width="wrap_content"
-            android:layout_marginStart="56dp"
-            android:layout_marginEnd="56dp"
+            android:layout_marginStart="50dp"
+            android:layout_marginEnd="50dp"
             android:layout_marginBottom="@dimen/payments_section_vertical_spacing"
             android:layout_marginTop="@dimen/payments_section_vertical_spacing"
             android:layout_gravity="center_vertical"
@@ -41,6 +41,7 @@
                 android:id="@+id/page_title"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
+                android:paddingStart="6dp"
                 android:ellipsize="end"
                 android:maxLines="1"
                 android:singleLine="true"
@@ -52,6 +53,8 @@
                 android:id="@+id/hostname"
                 android:layout_height="wrap_content"
                 android:layout_width="wrap_content"
+                android:paddingStart="6dp"
+                android:gravity="center_vertical"
                 android:ellipsize="start"
                 android:maxLines="1"
                 android:singleLine="true"