Adds the browser Geolocation permissions prompt.

Note that the appearance of the prompt has not yet been finalized.

Also the interaction of the prompt with the animation used to move to and from
the tab picker is not fixed. This may become unecessary if the tab selection UI
is redisgned.
diff --git a/res/values/colors.xml b/res/values/colors.xml
index f34b640..def8ac8 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -38,5 +38,7 @@
     <color name="permission_border">#f1cc1d</color>
     <color name="permission_background">#faefb8</color>
     <color name="dialog_link">#ff0000ff</color>
+
+    <color name="geolocation_permissions_prompt_background">#CC888888</color>
 </resources>
 
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 47f1a60..3f4c786 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -785,6 +785,11 @@
     <string name="webstorage_origin_summary_mb_stored">MB stored on your phone</string>
 
     <!-- Geolocation -->
+    <!-- Permissions prompt -->
+    <string name="geolocation_permissions_prompt_message">%s wants to know your location</string>
+    <string name="geolocation_permissions_prompt_share">Share</string>
+    <string name="geolocation_permissions_prompt_dont_share">Don\'t share</string>
+    <string name="geolocation_permissions_prompt_remember">Remember</string>
     <!-- Settings page, Advanced Settings -> Website settings -> <origin> -->
     <string name="geolocation_settings_page_title">Clear location access</string>
     <string name="geolocation_settings_page_summary_allowed">This site can currently access your location</string>