Remove CreateV0ShadowRootForTesting() usage from more tests

Bug: 966758,937746
Change-Id: I7315e4b9a1a818d470c31000c4b605270e22391c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2580432
Auto-Submit: Mason Freed <masonfreed@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835080}

third_party/blink/renderer/core/editing/finder/text_finder_test.cc

@@ -229,11 +229,10 @@ TEST_F(TextFinderTest, FindTextNotFound) {
 }
 
 TEST_F(TextFinderTest, FindTextInShadowDOM) {
-  GetDocument().body()->setInnerHTML("<b>FOO</b><i>foo</i>");
+  GetDocument().body()->setInnerHTML("<b>FOO</b><i slot='bar'>foo</i>");
   ShadowRoot& shadow_root =
-      GetDocument().body()->CreateV0ShadowRootForTesting();
-  shadow_root.setInnerHTML(
-      "<content select=\"i\"></content><u>Foo</u><content></content>");
+      GetDocument().body()->AttachShadowRootInternal(ShadowRootType::kOpen);
+  shadow_root.setInnerHTML("<slot name='bar'></slot><u>Foo</u><slot></slot>");
   Node* text_in_b_element = GetDocument().body()->firstChild()->firstChild();
   Node* text_in_i_element = GetDocument().body()->lastChild()->firstChild();
   Node* text_in_u_element = shadow_root.childNodes()->item(1)->firstChild();
@@ -391,11 +390,10 @@ TEST_F(TextFinderTest, ScopeTextMatchesRepeated) {
 }
 
 TEST_F(TextFinderTest, ScopeTextMatchesWithShadowDOM) {
-  GetDocument().body()->setInnerHTML("<b>FOO</b><i>foo</i>");
+  GetDocument().body()->setInnerHTML("<b>FOO</b><i slot='bar'>foo</i>");
   ShadowRoot& shadow_root =
-      GetDocument().body()->CreateV0ShadowRootForTesting();
-  shadow_root.setInnerHTML(
-      "<content select=\"i\"></content><u>Foo</u><content></content>");
+      GetDocument().body()->AttachShadowRootInternal(ShadowRootType::kOpen);
+  shadow_root.setInnerHTML("<slot name='bar'></slot><u>Foo</u><slot></slot>");
   Node* text_in_b_element = GetDocument().body()->firstChild()->firstChild();
   Node* text_in_i_element = GetDocument().body()->lastChild()->firstChild();
   Node* text_in_u_element = shadow_root.childNodes()->item(1)->firstChild();

third_party/blink/renderer/core/exported/web_element_test.cc

@@ -97,16 +97,6 @@ TEST_F(WebElementTest, ShadowRoot) {
   EXPECT_TRUE(TestElement().ShadowRoot().IsNull())
       << "ShadowRoot() should not return a UA ShadowRoot.";
 
-  {
-    InsertHTML("<div id=testElement></div>");
-    EXPECT_TRUE(TestElement().ShadowRoot().IsNull())
-        << "No ShadowRoot initially.";
-    auto* element = GetDocument().getElementById("testElement");
-    element->CreateV0ShadowRootForTesting();
-    EXPECT_FALSE(TestElement().ShadowRoot().IsNull())
-        << "Should return V0 ShadowRoot.";
-  }
-
   {
     InsertHTML("<span id=testElement></span>");
     EXPECT_TRUE(TestElement().ShadowRoot().IsNull())