[ios] Hides edit icon for non editable field on Infobar Password Modal.

Bug: 1021531
Change-Id: Iac64878763510d21b19b77d3c69e178cd3b597be
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1899799
Reviewed-by: Chris Lu <thegreenfrog@chromium.org>
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713053}

ios/chrome/browser/ui/infobars/modals/infobar_password_table_view_controller.mm

@@ -152,6 +152,7 @@ - (void)loadModel {
   URLItem.textFieldName =
       l10n_util::GetNSString(IDS_IOS_SHOW_PASSWORD_VIEW_SITE);
   URLItem.textFieldValue = self.URL;
+  URLItem.hideIcon = YES;
   [model addItem:URLItem toSectionWithIdentifier:SectionIdentifierContent];
 
   self.originalUsername = self.username;
@@ -174,6 +175,7 @@ - (void)loadModel {
   self.passwordItem.identifyingIcon =
       [UIImage imageNamed:@"infobar_reveal_password_icon"];
   self.passwordItem.identifyingIconEnabled = YES;
+  self.passwordItem.hideIcon = YES;
   self.passwordItem.identifyingIconAccessibilityLabel = l10n_util::GetNSString(
       IDS_IOS_INFOBAR_MODAL_PASSWORD_REVEAL_PASSWORD_HINT);
   [model addItem:self.passwordItem