[Autofill] Implement Autofill Assistant infobar for iOS

components/autofill_strings.grdp

Index: components/autofill_strings.grdp
diff --git a/components/autofill_strings.grdp b/components/autofill_strings.grdp
index 1c8fef8a7958f620a2a0f62568341c8449a117fd..6251dad7bbf28928d5ff859e8c5e7e400abb25d2 100644
--- a/components/autofill_strings.grdp
+++ b/components/autofill_strings.grdp
@@ -175,12 +175,21 @@
   </message>
 
   <!-- Autofill Credit Card Assisted Filling Infobar -->
-  <message name="IDS_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_TITLE" desc="Title text for the Autofill Credit Card Assisted Filling Infobar">
-    Do you want to fill in your card info?
-  </message>
-  <message name="IDS_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_ACCEPT" desc="Text to show for the Autofill credit card Assisted Filling infobar accept button.">
-    Fill in
-  </message>
+  <if expr="is_android">
+    <message name="IDS_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_TITLE" desc="Title text for the Autofill Credit Card Assisted Filling Infobar">
+      Do you want to fill in your card info?
+    </message>
+  </if>
+  <if expr="is_ios">
+    <message name="IDS_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_FORMATTED_TITLE" desc="Title text for the Autofill Credit Card Assisted Filling Infobar, which contains the card description in it.">
+      Do you want to fill in your <ph name="CARD_DETAIL">$1<ex>Visa - 1234</ex></ph>?
+    </message>
+  </if>
+  <if expr="is_android or is_ios">
+    <message name="IDS_AUTOFILL_CREDIT_CARD_FILLING_INFOBAR_ACCEPT" desc="Text to show for the Autofill credit card Assisted Filling infobar accept button.">
+      Fill in
+    </message>
+  </if>
 
   <!-- Autofill save credit card bubble or infobar prompt -->
   <message name="IDS_AUTOFILL_SAVE_CARD_PROMPT_ACCEPT" desc="Text to show for the Autofill save credit card prompt accept button. The prompt can be either a bubble or an infobar.">