Add trace links to chrome://inspect (if chrome://inspect?tracing is used)

chrome/browser/resources/inspect/inspect.js

Index: chrome/browser/resources/inspect/inspect.js
diff --git a/chrome/browser/resources/inspect/inspect.js b/chrome/browser/resources/inspect/inspect.js
index e18a8814760405172de360ee529d74c87717d730..07bfa87ac6a9f5aee6658542d66217c560db7652 100644
--- a/chrome/browser/resources/inspect/inspect.js
+++ b/chrome/browser/resources/inspect/inspect.js
@@ -342,6 +342,18 @@ function populateRemoteTargets(devices) {
                   browser.id, queryParamsObject['browser-inspector']), false);
         }
 
+        if ('trace' in queryParamsObject || 'tracing' in queryParamsObject) {
+          var link = document.createElement('span');
+          link.classList.add('action');
+          link.setAttribute('tabindex', 1);
+          link.textContent = 'trace';
+          browserHeader.appendChild(link);
+          link.addEventListener(
+              'click',
+              sendCommand.bind(null, 'trace-browser', browser.source,
+                  browser.id), false);
+        }
+
         pageList = document.createElement('div');
         pageList.className = 'list pages';
         browserSection.appendChild(pageList);