Bug 1010740 - Update icon for the edit cancel button (r=mcomella)

mobile/android/base/resources/drawable/close_edit_mode_selector.xml

@@ -9,6 +9,9 @@
     <item gecko:state_dark="true"
           android:drawable="@drawable/close_edit_mode_dark"/>
 
+    <item gecko:state_private="true"
+          android:drawable="@drawable/close_edit_mode_light"/>
+
     <item android:drawable="@drawable/close_edit_mode_light"/>
 
 </selector>

mobile/android/base/toolbar/BrowserToolbar.java

@@ -1392,6 +1392,7 @@ public class BrowserToolbar extends ThemedRelativeLayout
         tabsButton.setPrivateMode(isPrivate);
         menuButton.setPrivateMode(isPrivate);
         menuIcon.setPrivateMode(isPrivate);
+        editCancel.setPrivateMode(isPrivate);
         urlEditLayout.setPrivateMode(isPrivate);
 
         if (backButton instanceof BackButton) {