Add swipe-to-delete gesture.

Change-Id: I992e59702f9dfff17da2f4464e48c9228d42b1b3
diff --git a/res/drawable-hdpi/ic_menu_revert_holo_dark.png b/res/drawable-hdpi/ic_menu_revert_holo_dark.png
new file mode 100644
index 0000000..6165a98
--- /dev/null
+++ b/res/drawable-hdpi/ic_menu_revert_holo_dark.png
Binary files differ
diff --git a/res/drawable-hdpi/panel_undo_holo.9.png b/res/drawable-hdpi/panel_undo_holo.9.png
new file mode 100644
index 0000000..2396b26
--- /dev/null
+++ b/res/drawable-hdpi/panel_undo_holo.9.png
Binary files differ
diff --git a/res/drawable-mdpi/ic_menu_revert_holo_dark.png b/res/drawable-mdpi/ic_menu_revert_holo_dark.png
new file mode 100644
index 0000000..97ee13d
--- /dev/null
+++ b/res/drawable-mdpi/ic_menu_revert_holo_dark.png
Binary files differ
diff --git a/res/drawable-mdpi/panel_undo_holo.9.png b/res/drawable-mdpi/panel_undo_holo.9.png
new file mode 100644
index 0000000..291a936
--- /dev/null
+++ b/res/drawable-mdpi/panel_undo_holo.9.png
Binary files differ
diff --git a/res/drawable-xhdpi/ic_menu_revert_holo_dark.png b/res/drawable-xhdpi/ic_menu_revert_holo_dark.png
new file mode 100644
index 0000000..48ff5bc
--- /dev/null
+++ b/res/drawable-xhdpi/ic_menu_revert_holo_dark.png
Binary files differ
diff --git a/res/drawable-xhdpi/panel_undo_holo.9.png b/res/drawable-xhdpi/panel_undo_holo.9.png
new file mode 100644
index 0000000..1dc4927
--- /dev/null
+++ b/res/drawable-xhdpi/panel_undo_holo.9.png
Binary files differ
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 529480c..899c1e6 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -108,6 +108,12 @@
     <string name="cancel">Cancel</string>
     <string name="share">Share</string>
 
+    <!-- The label shown after an image is deleted [CHAR LIMIT=16] -->
+    <string name="deleted">Deleted</string>
+
+    <!-- The label on the button which when clicked will undo a deletion of image [CHAR LIMIT=16]-->
+    <string name="undo">UNDO</string>
+
     <!-- String indicating more actions are available -->
     <string name="select_all">Select all</string>
     <string name="deselect_all">Deselect all</string>