[FedCM] Fix header horizontal margins on Android active mode

Screenshot
https://issues.chromium.org/action/issues/381525869/attachments/61239638?download=false

Bug: 381525869
Change-Id: I1d2bf15cabb1d81628fe3106ad88d6899c69f3a4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6064521
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Zachary Tan <tanzachary@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1390582}
diff --git a/chrome/browser/ui/android/webid/internal/java/res/layout/account_selection_active_mode_header_item.xml b/chrome/browser/ui/android/webid/internal/java/res/layout/account_selection_active_mode_header_item.xml
index 86901eb..2de8abe6 100644
--- a/chrome/browser/ui/android/webid/internal/java/res/layout/account_selection_active_mode_header_item.xml
+++ b/chrome/browser/ui/android/webid/internal/java/res/layout/account_selection_active_mode_header_item.xml
@@ -8,6 +8,7 @@
 <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_marginHorizontal="@dimen/account_selection_active_mode_sheet_header_horizontal_margin"
     android:layout_height="wrap_content"
     android:layout_width="match_parent"
     android:orientation="vertical">
diff --git a/chrome/browser/ui/android/webid/internal/java/res/values/dimens.xml b/chrome/browser/ui/android/webid/internal/java/res/values/dimens.xml
index d1b7cc3d..f90f490 100644
--- a/chrome/browser/ui/android/webid/internal/java/res/values/dimens.xml
+++ b/chrome/browser/ui/android/webid/internal/java/res/values/dimens.xml
@@ -29,6 +29,7 @@
   <dimen name="account_selection_active_mode_sheet_icon_padding">8dp</dimen>
   <dimen name="account_selection_active_mode_sheet_continue_button_top_margin">24dp</dimen>
   <dimen name="account_selection_active_mode_sheet_title_padding">10dp</dimen>
+  <dimen name="account_selection_active_mode_sheet_header_horizontal_margin">24dp</dimen>
   <dimen name="account_selection_active_mode_sheet_add_account_button_top_margin">12dp</dimen>
   <dimen name="account_selection_active_mode_sheet_plus_icon_horizontal_margin">18dp</dimen>
   <dimen name="account_selection_active_mode_sheet_account_row_padding">2dp</dimen>