TextIteratorAlgorithm should not force layout update in constructor.

third_party/WebKit/Source/core/editing/EditingTestBase.cpp

Index: third_party/WebKit/Source/core/editing/EditingTestBase.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingTestBase.cpp b/third_party/WebKit/Source/core/editing/EditingTestBase.cpp
index 13afe5080e5fcab480aca9ed6d899afa14cd85e3..825df3697be2b9ecee0db78219af112abdcca44f 100644
--- a/third_party/WebKit/Source/core/editing/EditingTestBase.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingTestBase.cpp
@@ -35,18 +35,20 @@ PassRefPtrWillBeRawPtr<ShadowRoot> EditingTestBase::createShadowRootForElementWi
 {
     RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = scope.getElementById(AtomicString::fromUTF8(hostElementID))->createShadowRootInternal(ShadowRootType::V0, ASSERT_NO_EXCEPTION);
     shadowRoot->setInnerHTML(String::fromUTF8(shadowRootContent), ASSERT_NO_EXCEPTION);
+    scope.document().view()->updateAllLifecyclePhases();
     return shadowRoot.release();
 }
 
 void EditingTestBase::setBodyContent(const char* bodyContent)
 {
     document().body()->setInnerHTML(String::fromUTF8(bodyContent), ASSERT_NO_EXCEPTION);
+    updateLayoutAndStyleForPainting();
 }
 
 PassRefPtrWillBeRawPtr<ShadowRoot> EditingTestBase::setShadowContent(const char* shadowContent, const char* host)
 {
     RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = createShadowRootForElementWithIDAndSetInnerHTML(document(), host, shadowContent);
-    document().updateDistribution();
+    updateLayoutAndStyleForPainting();
     return shadowRoot.release();
 }