🔍 Add first run dialog for selecting search engine

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

Index: chrome/android/java/res/layout/account_signin_view.xml
diff --git a/chrome/android/java/res/layout/account_signin_view.xml b/chrome/android/java/res/layout/account_signin_view.xml
index 4a72c233ea96edb1c5057aec4704470ec24099c9..9bb53a92ebe644e19f137f71eed585eec11edd9a 100644
--- a/chrome/android/java/res/layout/account_signin_view.xml
+++ b/chrome/android/java/res/layout/account_signin_view.xml
@@ -45,11 +45,7 @@
                     android:textSize="@dimen/fre_title_text_size"
                     android:text="@string/sign_in_to_chrome"/>
 
-                <View
-                    android:layout_width="match_parent"
-                    android:layout_height="1dp"
-                    android:background="@color/signin_border_line_color"
-                    android:alpha="0.08"/>
+                <View style="@style/Divider"/>
 
                 <TextView
                     android:id="@+id/signin_choice_description"
@@ -120,11 +116,8 @@
 
                 <View
                     android:id="@+id/signin_confirmation_head_body_border"
-                    android:layout_width="match_parent"
-                    android:layout_height="1dp"
-                    android:layout_below="@id/signin_confirmation_head"
-                    android:background="@color/signin_border_line_color"
-                    android:alpha="0.08"/>
+                    style="@style/Divider"
+                    android:layout_below="@id/signin_confirmation_head"/>
 
                 <TextView
                     android:id="@+id/signin_chrome_sync_title"
@@ -157,13 +150,10 @@
 
                 <View
                     android:id="@+id/signin_confirmation_body_rule_line"
-                    android:layout_width="match_parent"
-                    android:layout_height="1dp"
+                    style="@style/Divider"
                     android:layout_marginStart="56dp"
                     android:layout_marginEnd="16dp"
-                    android:layout_below="@id/signin_chrome_sync_description"
-                    android:background="@color/signin_border_line_color"
-                    android:alpha="0.08"/>
+                    android:layout_below="@id/signin_chrome_sync_description"/>
 
                 <TextView
                     android:id="@+id/signin_personalize_service_title"