Add freeze tab menu option

  Adds a freeze tab menu option hidden behind about:debug for now.

Change-Id: I1b321de6a5dbcb13e87f6e658439f727970b0e4f
diff --git a/res/menu-sw600dp/browser.xml b/res/menu-sw600dp/browser.xml
index be4a521..23366e7 100644
--- a/res/menu-sw600dp/browser.xml
+++ b/res/menu-sw600dp/browser.xml
@@ -34,6 +34,9 @@
             android:alphabeticShortcut="s" />
         <item android:id="@+id/save_webarchive_menu_id"
             android:title="@string/menu_save_webarchive" />
+        <item
+            android:id="@+id/freeze_tab_menu_id"
+            android:title="@string/menu_freeze_tab" />
         <item android:id="@+id/page_info_menu_id"
             android:title="@string/page_info"
             android:icon="@drawable/ic_pageinfo_holo_dark"
diff --git a/res/menu/browser.xml b/res/menu/browser.xml
index 90357e9..6eadcba 100644
--- a/res/menu/browser.xml
+++ b/res/menu/browser.xml
@@ -65,6 +65,9 @@
             android:id="@+id/save_webarchive_menu_id"
             android:title="@string/menu_save_webarchive" />
         <item
+            android:id="@+id/freeze_tab_menu_id"
+            android:title="@string/menu_freeze_tab" />
+        <item
             android:id="@+id/page_info_menu_id"
             android:title="@string/page_info"
             android:icon="@drawable/ic_pageinfo_holo_dark"
diff --git a/res/values/strings.xml b/res/values/strings.xml
index ae28023..e51538c 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -235,6 +235,9 @@
     <string name="copy_page_url">Copy page url</string>
     <!-- Menu item -->
     <string name="share_page">Share page</string>
+    <!-- Menu item to freeze a tab. This will make a view-only
+            snapshot of the page in a new tab. [CHAR LIMIT=50] -->
+    <string name="menu_freeze_tab">Freeze tab</string>
     <!-- Menu item for saving a page. [CHAR LIMIT=30] -->
     <string name="menu_save_webarchive">Save page</string>
     <!-- Toast informing the user that the page has been saved. [CHAR LIMIT=50] -->