Remove dependency on Earl Grey from WebViewInteractionTestUtil

ios/web/public/test/web_view_interaction_test_util.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/web/public/test/web_view_interaction_test_util.h"
 
 #import <Foundation/Foundation.h>
 
-#include "ios/testing/earl_grey/wait_util.h"
+#include "base/test/ios/wait_util.h"
 #import "ios/web/web_state/ui/crw_web_controller.h"
 #include "ios/web/web_state/web_state_impl.h"
 
 using web::NavigationManager;
 
 namespace web {
 namespace test {
 
+const NSTimeInterval kWaitForJSCompletionTimeout = 2.0;
+const NSTimeInterval kSpinDelaySeconds = 0.01;
+
 enum ElementAction { ELEMENT_ACTION_CLICK, ELEMENT_ACTION_FOCUS };
 
 // Returns whether the Javascript action specified by |action| ran on
 // |element_id| in the passed |web_state|.
 bool RunActionOnWebViewElementWithId(web::WebState* web_state,
                                      const std::string& element_id,
                                      ElementAction action) {
   CRWWebController* web_controller =
       static_cast<WebStateImpl*>(web_state)->GetWebController();
   const char* js_action = nullptr;
@@ skipping 16 matching lines @@
                         "})();",
                        element_id.c_str(), js_action];
   __block bool did_complete = false;
   __block bool element_found = false;
   [web_controller executeUserJavaScript:script
                       completionHandler:^(id result, NSError*) {
                         did_complete = true;
                         element_found = [result boolValue];
                       }];
 
-  testing::WaitUntilCondition(testing::kWaitForJSCompletionTimeout, ^{
-    return did_complete;
-  });
+  NSDate* deadline =
+      [NSDate dateWithTimeIntervalSinceNow:kWaitForJSCompletionTimeout];
+  while (!did_complete &&
+         [[NSDate date] compare:deadline] != NSOrderedDescending) {
+    base::test::ios::SpinRunLoopWithMaxDelay(
+        base::TimeDelta::FromSecondsD(kSpinDelaySeconds));
+  }
 
-  return element_found;
+  return did_complete && element_found;
 }
 
 bool TapWebViewElementWithId(web::WebState* web_state,
                              const std::string& element_id) {
   return RunActionOnWebViewElementWithId(web_state, element_id,
                                          ELEMENT_ACTION_CLICK);
 }
 
 bool FocusWebViewElementWithId(web::WebState* web_state,
                                const std::string& element_id) {
   return RunActionOnWebViewElementWithId(web_state, element_id,
                                          ELEMENT_ACTION_FOCUS);
 }
 
 }  // namespace test
 }  // namespace web