[Editing][CodeHealth] remove default argument 'host' in EditingTestBase::setShadowContent

Source/core/editing/PositionTest.cpp

Index: Source/core/editing/PositionTest.cpp
diff --git a/Source/core/editing/PositionTest.cpp b/Source/core/editing/PositionTest.cpp
index ac15d4d65caf41cda8befa2b04cbd5fbd468601c..a1003c21eb8ce2d72e14ce4e47dba1ae60a507dd 100644
--- a/Source/core/editing/PositionTest.cpp
+++ b/Source/core/editing/PositionTest.cpp
@@ -51,7 +51,7 @@ TEST_F(PositionTest, NodeAsRangeLastNodeShadow)
     const char* bodyContent = "<p id='host'>00<b id='one'>11</b><b id='two'>22</b>33</p>";
     const char* shadowContent = "<a id='a'><content select=#two></content><content select=#one></content></a>";
     setBodyContent(bodyContent);
-    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent);
+    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
 
     Node* host = document().getElementById("host");
     Node* n1 = document().getElementById("one");
@@ -80,7 +80,7 @@ TEST_F(PositionTest, ToPositionInComposedTreeWithActiveInsertionPoint)
     const char* bodyContent = "<p id='host'>00<b id='one'>11</b>22</p>";
     const char* shadowContent = "<a id='a'><content select=#one id='content'></content><content></content></a>";
     setBodyContent(bodyContent);
-    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent);
+    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
     RefPtrWillBeRawPtr<Element> anchor = shadowRoot->getElementById("a");
 
     EXPECT_EQ(PositionInComposedTree(anchor.get(), 0), toPositionInComposedTree(Position(anchor.get(), 0)));
@@ -103,7 +103,7 @@ TEST_F(PositionTest, ToPositionInComposedTreeWithShadowRoot)
     const char* bodyContent = "<p id='host'>00<b id='one'>11</b>22</p>";
     const char* shadowContent = "<a><content select=#one></content></a>";
     setBodyContent(bodyContent);
-    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent);
+    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
     RefPtrWillBeRawPtr<Element> host = document().getElementById("host");
 
     EXPECT_EQ(PositionInComposedTree(host.get(), 0), toPositionInComposedTree(Position(shadowRoot.get(), 0)));
@@ -115,7 +115,7 @@ TEST_F(PositionTest, ToPositionInComposedTreeWithShadowRootContainingSingleConte
     const char* bodyContent = "<p id='host'>00<b id='one'>11</b>22</p>";
     const char* shadowContent = "<content select=#one></content>";
     setBodyContent(bodyContent);
-    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent);
+    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
     RefPtrWillBeRawPtr<Element> host = document().getElementById("host");
 
     EXPECT_EQ(PositionInComposedTree(host.get(), 0), toPositionInComposedTree(Position(shadowRoot.get(), 0)));
@@ -127,7 +127,7 @@ TEST_F(PositionTest, ToPositionInComposedTreeWithEmptyShadowRoot)
     const char* bodyContent = "<p id='host'>00<b id='one'>11</b>22</p>";
     const char* shadowContent = "";
     setBodyContent(bodyContent);
-    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent);
+    RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = setShadowContent(shadowContent, "host");
     RefPtrWillBeRawPtr<Element> host = document().getElementById("host");
 
     EXPECT_EQ(PositionInComposedTree(host, PositionAnchorType::AfterChildren), toPositionInComposedTree(Position(shadowRoot.get(), 0)));