Cleanup Tool WebUI: Add functionality to the Cleanup button

chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js

Index: chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js
diff --git a/chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js b/chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js
index 1e0e859e4b569d28bdba3d474d875521961b1470..2d87adbf896e6171a0e290a8ea4f4c7dd02fe394 100644
--- a/chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js
+++ b/chrome/browser/resources/cleanup_tool/cleanup_browser_proxy.js
@@ -17,6 +17,14 @@
  */
 var LastScanResult;
 
+/**
+ * @typedef {[
+ *   wasCancelled: boolean,
+ *   uwsRemoved: Array<string>,
+ * ]}
+ */
+var CleanupResult;
+
 cr.define('cleanup', function() {
   /** @interface */
   function CleanupBrowserProxy() {}
@@ -27,6 +35,12 @@ cr.define('cleanup', function() {
      * @return {!Promise<LastScanResult>}
      */
     requestLastScanResult: function() {},
+
+    /**
+     * Opens the prompt to run the Chrome Cleanup Tool.
+     * @return {!Promise<CleanupResult>}
+     */
+    startCleanup: function() {},
   };
 
   /**
@@ -41,6 +55,10 @@ cr.define('cleanup', function() {
     requestLastScanResult: function() {
       return cr.sendWithPromise('requestLastScanResult');
     },
+    /** @override */
+    startCleanup: function() {
+      return cr.sendWithPromise('startCleanup');
+    },
   };
 
   return {