Rename "tree of trees" to "composed tree".

third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html

Index: third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html b/third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html
index f93516282470345924e05d4003c7cb464d847660..02bd41c07aac41e1b9c20b7cdb2b025e24664864 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/shadow/attr-lang-inherit.html
@@ -33,35 +33,35 @@ testLangInShadow("lang inherits into the shadow tree",
 
 host = document.getElementById("distributed");
 createShadowRootWithInnerHtml(host, style + "<div lang=fr><div>French</div><content></content></div>");
-testLangInShadow("lang of the distributed content traverses the tree of trees",
+testLangInShadow("lang of the distributed content traverses the composed tree",
     [[host.shadowRoot.querySelector("div"), fr],
     [host.shadowRoot.host.firstChild, ja]]);
 
 host = document.getElementById("multiple");
 createShadowRootWithInnerHtml(host, style + "<content></content>");
 createShadowRootWithInnerHtml(host, style + "<div lang=fr><div>French</div><content></content></div>");
-testLangInShadow("lang of the distributed content traverses the tree of trees (multiple shadow roots)",
+testLangInShadow("lang of the distributed content traverses the composed tree (multiple shadow roots)",
     [[host.shadowRoot.querySelector("div"), fr],
     [host.shadowRoot.host.firstChild, ja]]);
 
 host = document.getElementById("multilevel");
 var host2ndLevel = createShadowRootWithInnerHtml(host, "<div><content></content></div>").firstChild;
 createShadowRootWithInnerHtml(host2ndLevel, style + "<div lang=fr><div>French</div><content></content></div>");
-testLangInShadow("lang of the distributed content traverses the tree of trees (multiple levels)",
+testLangInShadow("lang of the distributed content traverses the composed tree (multiple levels)",
     [[host2ndLevel.shadowRoot.querySelector("div"), fr],
     [host.firstChild, ja]]);
 
 host = document.getElementById("older");
 createShadowRootWithInnerHtml(host, style + "<div>olderShadowRoot</div>");
 createShadowRootWithInnerHtml(host, style + "<div lang=fr><div>French</div><shadow></shadow></div>");
-testLangInShadow("lang of the older shadow root traverses the tree of trees",
+testLangInShadow("lang of the older shadow root traverses the composed tree",
     [[host.shadowRoot.querySelector("div"), fr],
     [host.shadowRoot.olderShadowRoot.querySelector("div"), ja]]);
 
 host = document.getElementById("redistributed");
 createShadowRootWithInnerHtml(host, style + "<div lang=fr><div>French</div><content></content></div>");
 createShadowRootWithInnerHtml(host, style + "<shadow></shadow>");
-testLangInShadow("lang of the re-distributed content traverses the tree of trees",
+testLangInShadow("lang of the re-distributed content traverses the composed tree",
     [[host.shadowRoot.olderShadowRoot.querySelector("div"), fr],
     [host.firstChild, ja]]);