NavigationTiming: set navigationStart for navigations in new tabs.

content/renderer/accessibility/renderer_accessibility_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/strings/utf_string_conversions.h"
+#include "base/time/time.h"
 #include "content/common/frame_messages.h"
 #include "content/common/view_message_enums.h"
 #include "content/public/test/render_view_test.h"
 #include "content/renderer/accessibility/renderer_accessibility_complete.h"
 #include "content/renderer/render_view_impl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "third_party/WebKit/public/web/WebAXObject.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebView.h"
@@ skipping 317 matching lines @@
   // because the element it was referring to no longer exists,
   // so the event here is from loading this new page.
   FrameMsg_Navigate_Params nav_params;
   nav_params.url = GURL("data:text/html,<p>Hello, again.</p>");
   nav_params.navigation_type = FrameMsg_Navigate_Type::NORMAL;
   nav_params.transition = PAGE_TRANSITION_TYPED;
   nav_params.current_history_list_length = 1;
   nav_params.current_history_list_offset = 0;
   nav_params.pending_history_list_offset = 1;
   nav_params.page_id = -1;
+  nav_params.browser_navigation_start = base::TimeTicks::FromInternalValue(1);
   frame()->OnNavigate(nav_params);
   accessibility->SendPendingAccessibilityEvents();
   EXPECT_TRUE(sink_->GetUniqueMessageMatching(
       AccessibilityHostMsg_Events::ID));
 }
 
 TEST_F(RendererAccessibilityTest, HideAccessibilityObject) {
   // Test RendererAccessibilityComplete and make sure it sends the
   // proper event to the browser when an object in the tree
   // is hidden, but its children are not.
@@ skipping 192 matching lines @@
 
   const IPC::Message* message =
       sink_->GetUniqueMessageMatching(AccessibilityHostMsg_Events::ID);
   ASSERT_TRUE(message);
   Tuple1<std::vector<AccessibilityHostMsg_EventParams> > param;
   AccessibilityHostMsg_Events::Read(message, &param);
   ASSERT_EQ(0U, param.a.size());
 }
 
 }  // namespace content