Relanding [Android] Adding Smart GO/NEXT feature in Chrome

third_party/WebKit/Source/core/page/FocusControllerTest.cpp

 // 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.
 
 #include "core/page/FocusController.h"
 
 #include <memory>
 #include "bindings/core/v8/V8BindingForCore.h"
 #include "core/dom/ShadowRootInit.h"
 #include "core/html/HTMLElement.h"
@@ skipping 76 matching lines @@
 
 TEST_F(FocusControllerTest, SetActiveOnInactiveDocument) {
   // Test for crbug.com/700334
   GetDocument().Shutdown();
   // Document::shutdown() detaches document from its frame, and thus
   // document().page() becomes nullptr.
   // Use DummyPageHolder's page to retrieve FocusController.
   PageHolder()->GetPage().GetFocusController().SetActive(true);
 }
 
+// This test is for crbug.com/733218
+TEST_F(FocusControllerTest, SVGFocusableElementInForm) {
+  GetDocument().body()->setInnerHTML(
+      "<form>"
+      "<input id='first'>"
+      "<svg width='100px' height='100px' tabindex='0'>"
+      "<circle cx='50' cy='50' r='30' />"
+      "</svg>"
+      "<input id='last'>"
+      "</form>");
+
+  Element* form = ToElement(GetDocument().body()->firstChild());
+  Element* first = ToElement(form->firstChild());
+  Element* last = ToElement(form->lastChild());
+
+  Element* next = GetFocusController().NextFocusableElementInForm(
+      first, kWebFocusTypeForward);
+  EXPECT_EQ(next, last)
+      << "SVG Element should be skipped even when focusable in form.";
+
+  Element* prev = GetFocusController().NextFocusableElementInForm(
+      next, kWebFocusTypeBackward);
+  EXPECT_EQ(prev, first)
+      << "SVG Element should be skipped even when focusable in form.";
+}
+
 }  // namespace blink