Don't bother layout until first navigation is done.

content/renderer/render_view_browsertest.cc

Index: content/renderer/render_view_browsertest.cc
diff --git a/content/renderer/render_view_browsertest.cc b/content/renderer/render_view_browsertest.cc
index ba49266605de5233a33079313cb131afb9178af6..dcf209bdae58e6aa89f687cc3c37666716f8a1de 100644
--- a/content/renderer/render_view_browsertest.cc
+++ b/content/renderer/render_view_browsertest.cc
@@ -1436,6 +1436,9 @@ TEST_F(RenderViewImplTest, OnSetTextDirection) {
         "    node.getAttribute('dir') + ',' +"
         "    style.getPropertyValue('direction');");
 
+    // Required to see any updates in dumpFrameTreeAsText.
+    view()->GetWebView()->updateAllLifecyclePhases();
+
     // Copy the document content to std::wstring and compare with the
     // expected result.
     const int kMaxOutputCharacters = 16;
@@ -1576,6 +1579,9 @@ TEST_F(RenderViewImplTest, OnHandleKeyboardEvent) {
                        kModifierData[j].expected_result,
                        key_code, kModifierData[j].expected_result);
 
+        // Required to see any updates in dumpFrameTreeAsText.
+        view()->GetWebView()->updateAllLifecyclePhases();
+
         // Retrieve the text in the test page and compare it with the expected
         // text created from a virtual-key code, a character code, and the
         // modifier-key status.