🔍 Introduce default search engine dialog

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

Index: chrome/android/java/res/layout/promo_dialog_layout.xml
diff --git a/chrome/android/java/res/layout/promo_dialog_layout.xml b/chrome/android/java/res/layout/promo_dialog_layout.xml
index a6aff72061c25c374eb534ceec5d2f57b4c47592..6081a8232c709b172cc37836d1a32c352c509e54 100644
--- a/chrome/android/java/res/layout/promo_dialog_layout.xml
+++ b/chrome/android/java/res/layout/promo_dialog_layout.xml
@@ -25,11 +25,12 @@
                 android:id="@+id/promo_container"
                 android:layout_width="wrap_content"
                 android:layout_height="0dp"
-                android:layout_weight="1" >
+                android:layout_weight="1"
+                android:fadeScrollbars="false" >
 
             <!-- This layout pivots when the dialog is wider than it is tall. -->
             <LinearLayout
-                    android:id="@+id/promo_content"
+                    android:id="@+id/full_promo_content"
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:padding="@dimen/promo_dialog_padding"
@@ -41,11 +42,14 @@
                         android:layout_width="@dimen/promo_dialog_illustration_width"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        android:layout_margin="@dimen/promo_dialog_illustration_margin"
+                        android:layout_marginTop="@dimen/promo_dialog_illustration_margin"
+                        android:layout_marginStart="@dimen/promo_dialog_illustration_margin"
+                        android:layout_marginEnd="@dimen/promo_dialog_illustration_margin"
                         android:scaleType="fitCenter"
                         android:contentDescription="@null" />
 
                 <org.chromium.chrome.browser.widget.BoundedLinearLayout
+                        android:id="@+id/scrollable_promo_content"
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:orientation="vertical"
@@ -55,7 +59,8 @@
                             android:id="@+id/header"
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
-                            android:layout_marginBottom="14dp"
+                            android:layout_marginTop="@dimen/dialog_header_margin"
+                            android:layout_marginBottom="@dimen/dialog_header_margin"
                             android:textColor="@color/default_text_color"
                             android:textSize="@dimen/promo_dialog_title_text_size" />
 
@@ -71,6 +76,14 @@
 
         </org.chromium.chrome.browser.widget.FadingEdgeScrollView>
 
+        <ViewStub
+                android:id="@+id/footer_stub"
+                android:layout="@layout/infobar_control_description"
+                android:inflatedId="@+id/footer"
+                android:layout_margin="@dimen/promo_dialog_padding"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" />
+
         <org.chromium.chrome.browser.widget.DualControlLayout
                 android:id="@+id/button_bar"
                 android:layout_width="wrap_content"