[fuchsia] Update FrameImpl browser tests to use FrameForTest helper.

Bug: 1200314
Change-Id: I6921d7fe355013d5561bfa4bb17976fd9940ec31
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2878803
Commit-Queue: Wez <wez@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#885786}

fuchsia/base/test/frame_test_util.cc

@@ -29,6 +29,13 @@ bool LoadUrlAndExpectResponse(
   return result->is_response();
 }
 
+bool LoadUrlAndExpectResponse(
+    const fuchsia::web::NavigationControllerPtr& controller,
+    fuchsia::web::LoadUrlParams params,
+    base::StringPiece url) {
+  return LoadUrlAndExpectResponse(controller.get(), std::move(params), url);
+}
+
 absl::optional<base::Value> ExecuteJavaScript(fuchsia::web::Frame* frame,
                                               base::StringPiece script) {
   base::RunLoop run_loop;

fuchsia/base/test/frame_test_util.h

@@ -20,6 +20,10 @@ bool LoadUrlAndExpectResponse(
     fuchsia::web::NavigationController* navigation_controller,
     fuchsia::web::LoadUrlParams load_url_params,
     base::StringPiece url);
+bool LoadUrlAndExpectResponse(
+    const fuchsia::web::NavigationControllerPtr& navigation_controller,
+    fuchsia::web::LoadUrlParams load_url_params,
+    base::StringPiece url);
 
 // Executes |script| in the context of |frame|'s top-level document.
 // Returns an un-set |absl::optional<>| on failure.

fuchsia/engine/test/frame_for_test.h

@@ -40,11 +40,19 @@ class FrameForTest {
   // Returns the fuchsia.web.FramePtr owned by this instance.
   fuchsia::web::FramePtr& ptr() { return frame_; }
 
+  // Provide member-dereference operator to improve test readability by letting
+  // Frame calls be expressed directly on |this|, rather than via |ptr()|.
+  fuchsia::web::Frame* operator->() { return frame_.get(); }
+
   // May be called only on non-default-initialized instances, i.e. those
   // returned directly, or via move-assignment, from Create().
   TestNavigationListener& navigation_listener() {
     return *navigation_listener_;
   }
+  fidl::Binding<fuchsia::web::NavigationEventListener>&
+  navigation_listener_binding() {
+    return *navigation_listener_binding_;
+  }
 
  private:
   void CreateAndAttachNavigationListener();