sync: Add UI code for per type debug counters

chrome/browser/resources/sync_internals/chrome_sync.js

Index: chrome/browser/resources/sync_internals/chrome_sync.js
diff --git a/chrome/browser/resources/sync_internals/chrome_sync.js b/chrome/browser/resources/sync_internals/chrome_sync.js
index 5bd7e6ffa80dc459c7e55644acfc4a2fabfe4dcf..93121fde889e76c39f8d4a0655b192a78ced7492 100644
--- a/chrome/browser/resources/sync_internals/chrome_sync.js
+++ b/chrome/browser/resources/sync_internals/chrome_sync.js
@@ -54,6 +54,14 @@ cr.define('chrome.sync', function() {
   };
 
   /**
+   * Registers to receive a stream of status counter update events
+   * chrome.sync.dispatchEvent().
+   */
+  var registerForPerTypeCounters = function() {
+    chrome.send('registerForPerTypeCounters');
+  }
+
+  /**
    * Asks the browser to refresh our snapshot of sync state.  Should result
    * in an onAboutInfoUpdated event being emitted.
    */
@@ -111,6 +119,7 @@ cr.define('chrome.sync', function() {
     getAllNodes: getAllNodes,
     getAllNodesCallback: getAllNodesCallback,
     registerForEvents: registerForEvents,
+    registerForPerTypeCounters: registerForPerTypeCounters,
     requestUpdatedAboutInfo: requestUpdatedAboutInfo,
     requestListOfTypes: requestListOfTypes,
   };