Add the UI for the Interests Prototype.

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index 427efbe28b79e62ed43d2798aadcf486232fbb04..b120955cdf5d482c80d99028bd7802f856eaf849 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -1699,6 +1699,9 @@ Just open Chrome on your computer, go to the menu, and select “Sign in to Chro
       <message name="IDS_REMOVE_ALL" desc="Context menu option to clear the list of recently closed tabs">
         Remove all
       </message>
+      <message name="IDS_NTP_INTERESTS" desc="Title of the page where the user's topics of interests are shown">

[Marc Treib, 2015/09/18 13:26:04]

nit: "topics of interest" (s/interests/interest/g)
Also, this isn't actually used yet. I guess we don't have mocks on how exactly
we want to surface this?

[tache, 2015/09/21 15:35:55]

This is used in the title of dialog in which the interests are currently shown.

[Marc Treib, 2015/09/21 16:20:08]

Ah, right. Once again I prove my unfamiliarity with Java in Chrome :D

+        Interests
+      </message>
 
       <!-- Toolbar button strings -->
       <message name="IDS_OPEN_TABS" desc="Text for button to enter the tab switcher and show tabs that are open on this device">