Better layouts for security screen setups as part of b/7459863

The major change is that choose pattern and confirm pattern layouts
no longer uses a split screen layout on tablets.  The new layout
closely mimics the layout for portrait.
Other minor changes include:
-Made the header font size for confirm pattern and choose pattern
medium (this matches with face unlock changes).
-Made the buttons on choose pattern for landscape phone side-by-side
rather than above each other (to be consistent with face unlock).
-Removed the black background from phone landscape confirm pattern
since it's inconsistent with all the other layouts.

Change-Id: I4473fe880ac471a3b5bc5399a454b10504589f87
diff --git a/res/layout-sw600dp-land/confirm_lock_pattern.xml b/res/layout-sw600dp-land/confirm_lock_pattern.xml
index 627ff02..b9dd27a 100644
--- a/res/layout-sw600dp-land/confirm_lock_pattern.xml
+++ b/res/layout-sw600dp-land/confirm_lock_pattern.xml
@@ -16,78 +16,48 @@
 <com.android.internal.widget.LinearLayoutWithDefaultTouchRecepient
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/topLayout"
-    android:orientation="horizontal"
+    android:orientation="vertical"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:gravity="center_horizontal">
 
-    <!-- left side: lock pattern widget -->
-    <RelativeLayout
-        android:layout_width="0dip"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        android:gravity="center_horizontal|center_vertical"
-        android:orientation="horizontal">
+    <!-- header message -->
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:layout_marginTop="40dip">
 
-        <com.android.internal.widget.LockPatternView android:id="@+id/lockPattern"
-             android:layout_width="354dip"
-             android:layout_height="354dip"
-             aspect="square"/>
-
-     </RelativeLayout>
-
-    <!-- right side: instructions and buttons -->
-    <RelativeLayout
-        android:layout_width="0dip"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        android:gravity="center_horizontal">
-
-        <!-- confirm / restart buttons -->
-        <LinearLayout android:id="@+id/buttonContainer"
-            style="@style/SecurityPreferenceButtonContainer"
-            android:layout_alignParentEnd="true"
-            android:layout_alignParentBottom="true"
-            android:orientation="horizontal"
-            android:visibility="invisible">
-
-            <!-- left / top button: skip, or re-try -->
-            <Button android:id="@+id/footerLeftButton"
-                style="@style/SecurityPreferenceButton"
-                android:text="@string/lockpattern_restart_button_text"/>
-
-            <!-- right / bottom button: confirm or ok -->
-            <Button android:id="@+id/footerRightButton"
-                style="@style/SecurityPreferenceButton"
-                android:text="@string/lockpattern_confirm_button_text"/>
-
-        </LinearLayout>
-
-        <!-- footer message -->
-        <TextView android:id="@+id/footerText"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_above="@id/buttonContainer"
-            android:layout_marginTop="16dip"
-            android:textAppearance="?android:attr/textAppearanceLarge"/>
-
-        <!-- header message -->
-        <ScrollView
+        <TextView android:id="@+id/headerText"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_alignParentTop="true"
-            android:layout_marginTop="20dip"
-            android:layout_marginStart="20dip"
-            android:layout_above="@id/footerText"
-            android:gravity="center_vertical|center_horizontal">
+            android:gravity="center"
+            android:textAppearance="?android:attr/textAppearanceMedium"/>
 
-            <TextView android:id="@+id/headerText"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:textSize="22sp"/>
+    </ScrollView>
 
-        </ScrollView>
+    <!-- footer message -->
+    <TextView android:id="@+id/footerText"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dip"
+        android:textAppearance="?android:attr/textAppearanceMedium"/>
 
-    </RelativeLayout>
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="0dip"
+        android:layout_weight="0.6"/>
+
+    <!-- lock pattern widget -->
+    <com.android.internal.widget.LockPatternView android:id="@+id/lockPattern"
+        android:layout_width="354dip"
+        android:layout_height="354dip"
+        aspect="square"/>
+
+    <View
+        android:layout_width="match_parent"
+        android:layout_height="0dip"
+        android:layout_weight="1"/>
 
 </com.android.internal.widget.LinearLayoutWithDefaultTouchRecepient>