Context menu egtests, plus related utilities.

ios/web/public/test/web_view_interaction_test_util.h

Index: ios/web/public/test/web_view_interaction_test_util.h
diff --git a/ios/web/public/test/web_view_interaction_test_util.h b/ios/web/public/test/web_view_interaction_test_util.h
index 2981ecc42ce7e6430710b4ad00cbf99b07a8fb6d..2aa64f565a2d9b1a64e02748e40cb224ee6cd752 100644
--- a/ios/web/public/test/web_view_interaction_test_util.h
+++ b/ios/web/public/test/web_view_interaction_test_util.h
@@ -2,13 +2,30 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#import "ios/web/public/web_state/web_state.h"
+#import <UIKit/UIKit.h>
 
 #include <string>
 
+#include "base/ios/block_types.h"
+#include "base/values.h"
+
+#import "ios/web/public/web_state/web_state.h"
+
 namespace web {
 namespace test {
 
+// Synchronously returns the result of executed JavaScript.
+std::unique_ptr<base::Value> ExecuteJavaScript(web::WebState* web_state,
+                                               const std::string& script);
+
+// Returns the CGRect, in the coordinate system of web_state's view, that
+// encloses the element with |element_id| in |web_state|'s webview.
+// There is no guarantee that the CGRect returned is inside the current window;
+// callers should check and act accordingly (scrolling the webview, perhaps).
+// Returns CGRectNull if no element could be found.
+CGRect GetBoundingRectOfElementWithId(web::WebState* web_state,
+                                      const std::string& element_id);
+
 // Returns whether the element with |element_id| in the passed |web_state| has
 // been tapped using a JavaScript click() event.
 bool TapWebViewElementWithId(web::WebState* web_state,