For #21621 - Add 16dp horizontal spacing to all normal browsing home items

app/src/main/res/layout/button_tip_item.xml

@@ -9,8 +9,8 @@
     style="@style/OnboardingCardLight"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="@drawable/cfr_background_gradient"
-    android:padding="0dp">
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
+    android:background="@drawable/cfr_background_gradient">
 
     <TextView
         android:id="@+id/tip_header_text"

app/src/main/res/layout/collection_header.xml

@@ -7,6 +7,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="40dp">
 
     <androidx.appcompat.widget.AppCompatTextView

app/src/main/res/layout/collection_home_list_row.xml

@@ -7,6 +7,7 @@
     android:id="@+id/item_collection"
     android:layout_width="match_parent"
     android:layout_height="48dp"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="12dp"
     android:background="@drawable/card_list_row_background"
     android:clickable="true"

app/src/main/res/layout/component_recent_bookmarks.xml

@@ -7,6 +7,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:clipChildren="false"
     android:clipToPadding="false"
     android:orientation="vertical">

app/src/main/res/layout/component_top_sites_pager.xml

@@ -6,6 +6,7 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:orientation="vertical">
 
     <androidx.viewpager2.widget.ViewPager2

app/src/main/res/layout/customize_home_list_item.xml

@@ -9,6 +9,7 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:paddingVertical="16dp"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="24dp"
     android:background="?android:attr/selectableItemBackground">
 

app/src/main/res/layout/history_metadata_header.xml

@@ -7,6 +7,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="40dp">
 
     <androidx.appcompat.widget.AppCompatTextView

app/src/main/res/layout/no_collections_message.xml

@@ -7,6 +7,7 @@
     android:id="@+id/no_collections_wrapper"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="40dp"
     android:layout_marginBottom="12dp"
     android:background="@drawable/empty_session_control_background"

app/src/main/res/layout/recent_tabs_header.xml

@@ -2,11 +2,11 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<androidx.constraintlayout.widget.ConstraintLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:layout_marginTop="40dp">
 
     <androidx.appcompat.widget.AppCompatTextView

app/src/main/res/layout/site_list_item.xml

@@ -2,9 +2,9 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<mozilla.components.ui.widgets.WidgetSiteItemView
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<mozilla.components.ui.widgets.WidgetSiteItemView xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/site_list_item"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:layout_marginHorizontal="@dimen/home_item_horizontal_margin"
     android:minHeight="@dimen/mozac_widget_site_item_height" />