Remove all calls to domAutomationController.setAutomationId.

These calls are no longer needed after r485461
(https://crrev.com/2478803003) which has made the
domAutomationController.setAutomationId call a no-op.

BUG=662543
This CL was uploaded by git cl split.

R=nasko@chromium.org

Review-Url: https://codereview.chromium.org/2978693002
Cr-Commit-Position: refs/heads/master@{#485958}

chrome/browser/ui/views/drag_and_drop_interactive_uitest.cc

@@ -1210,10 +1210,9 @@ void DragAndDropBrowserTest::CrossSiteDrag_Step2(
     // the test before the event has had a chance to be reported back to the
     // browser.
     std::string expected_response = base::StringPrintf("\"i%d\"", i);
-    right_frame()->ExecuteJavaScriptWithUserGestureForTests(base::UTF8ToUTF16(
-        base::StringPrintf("domAutomationController.setAutomationId(0);\n"
-                           "domAutomationController.send(%s);\n",
-                           expected_response.c_str())));
+    right_frame()->ExecuteJavaScriptWithUserGestureForTests(
+        base::UTF8ToUTF16(base::StringPrintf(
+            "domAutomationController.send(%s);", expected_response.c_str())));
 
     // Wait until our response comes back (it might be mixed with responses
     // carrying events that are sent by event_monitoring.js).