[page_load_metrics] Add a NavigationThrottle for richer abort metrics

content/browser/frame_host/navigation_controller_impl_browsertest.cc

 // Copyright 2014 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 "content/browser/frame_host/navigation_controller_impl.h"
 
 #include <stdint.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 1850 matching lines @@
   // 1. Create a iframe with a URL that doesn't commit.
   GURL slow_url(embedded_test_server()->GetURL(
       "/navigation_controller/simple_page_2.html"));
   TestNavigationManager subframe_delayer(shell()->web_contents(), slow_url);
   {
     std::string script = "var iframe = document.createElement('iframe');"
                          "iframe.src = '" + slow_url.spec() + "';"
                          "document.body.appendChild(iframe);";
     EXPECT_TRUE(ExecuteScript(root, script));
   }
-  subframe_delayer.WaitForWillStartRequest();
+  EXPECT_TRUE(subframe_delayer.WaitForWillStartRequest());
 
   // Stop the request so that we can wait for load stop below, without ending up
   // with a commit for this frame.
   shell()->web_contents()->Stop();
 
   // 2. A nested iframe with a cross-site URL should be able to commit.
   GURL foo_url(embedded_test_server()->GetURL(
       "foo.com", "/navigation_controller/simple_page_1.html"));
   {
     std::string script = "var iframe = document.createElement('iframe');"
@@ skipping 2170 matching lines @@
   std::string script = "document.getElementById('thelink').click()";
   EXPECT_TRUE(ExecuteScript(root, script));
   EXPECT_TRUE(WaitForLoadStop(shell()->web_contents()));
   EXPECT_EQ(2, controller.GetEntryCount());
   EXPECT_EQ(1, controller.GetLastCommittedEntryIndex());
 
   // Go back to the first page, which never completes. The attempt to unload the
   // second page, though, causes it to do a replaceState().
   TestNavigationManager manager(shell()->web_contents(), start_url);
   controller.GoBack();
-  manager.WaitForWillStartRequest();
+  EXPECT_TRUE(manager.WaitForWillStartRequest());
 
   // The navigation that just happened was the replaceState(), which should not
   // have changed the position into the navigation entry list. Make sure that
   // the pending navigation didn't confuse anything.
   EXPECT_EQ(1, controller.GetLastCommittedEntryIndex());
 }
 
 // Ensure the renderer process does not get confused about the current entry
 // due to subframes and replaced entries.  See https://crbug.com/480201.
 // TODO(creis): Re-enable for Site Isolation FYI bots: https://crbug.com/502317.
@@ skipping 902 matching lines @@
   EXPECT_EQ(frame_url_a1, root->child_at(0)->current_url());
 
   // Go forward two times in a row, being careful that the subframe commits
   // after the second forward navigation begins but before the main frame
   // commits.
   TestNavigationManager subframe_delayer(
       root->child_at(0)->frame_tree_node_id(), shell()->web_contents(),
       frame_url_a2);
   TestNavigationManager mainframe_delayer(shell()->web_contents(), url_b);
   controller.GoForward();
-  subframe_delayer.WaitForWillStartRequest();
+  EXPECT_TRUE(subframe_delayer.WaitForWillStartRequest());
   controller.GoForward();
-  mainframe_delayer.WaitForWillStartRequest();
+  EXPECT_TRUE(mainframe_delayer.WaitForWillStartRequest());
   EXPECT_EQ(2, controller.GetPendingEntryIndex());
 
   // Let the subframe commit.
   subframe_delayer.WaitForNavigationFinished();
   EXPECT_EQ(1, controller.GetLastCommittedEntryIndex());
   EXPECT_EQ(url_a, root->current_url());
   EXPECT_EQ(frame_url_a2, root->child_at(0)->current_url());
 
   // Let the main frame commit.
   mainframe_delayer.WaitForNavigationFinished();
@@ skipping 393 matching lines @@
   std::string body;
   EXPECT_TRUE(ExecuteScriptAndExtractString(
       shell()->web_contents(),
       "window.domAutomationController.send("
       "document.getElementsByTagName('pre')[0].innerText);",
       &body));
   EXPECT_EQ("text=value\n", body);
 }
 
 }  // namespace content