Update account and sync management UX

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

Index: chrome/android/java/res/layout/sync_custom_passphrase.xml
diff --git a/chrome/android/java/res/layout/sync_custom_passphrase.xml b/chrome/android/java/res/layout/sync_custom_passphrase.xml
index 397f9df31e80600a47622cf5f94fbc1633cdd865..5bbd3eb2fc64f47e18b2da0691eb438dd2a281ce 100644
--- a/chrome/android/java/res/layout/sync_custom_passphrase.xml
+++ b/chrome/android/java/res/layout/sync_custom_passphrase.xml
@@ -11,11 +11,6 @@
     <LinearLayout
         android:orientation="vertical"
         style="@style/AlertDialogContent">
-        <TextView
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginBottom="25dp"
-            android:text="@string/sync_custom_passphrase"/>
         <org.chromium.chrome.browser.widget.AlertDialogEditText
             android:id="@+id/passphrase"
             android:hint="@string/sync_enter_custom_passphrase_hint"
@@ -32,5 +27,11 @@
             android:inputType="textPassword"
             android:singleLine="true"
             android:imeOptions="actionDone" />
+        <TextView
+            android:id="@+id/custom_passphrase_instructions"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="25dp"

[newt (away), 2016/02/12 22:03:49]

Is this still the right margin size?

[May, 2016/02/16 17:32:06]

Changed to margin top instead. 

+            android:text="@string/sync_custom_passphrase"/>
     </LinearLayout>
 </ScrollView>