[page_load_metrics] Add a NavigationThrottle for richer abort metrics

chrome/browser/page_load_metrics/page_load_metrics_browsertest.cc

 // Copyright (c) 2015 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/macros.h"
 #include "base/test/histogram_tester.h"
+#include "chrome/browser/page_load_metrics/observers/aborts_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/core_page_load_metrics_observer.h"
 #include "chrome/browser/page_load_metrics/observers/document_write_page_load_metrics_observer.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_navigator_params.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test_utils.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 
 class MetricsWebContentsObserverBrowserTest : public InProcessBrowserTest {
  public:
   MetricsWebContentsObserverBrowserTest() {}
   ~MetricsWebContentsObserverBrowserTest() override {}
 
  protected:
   base::HistogramTester histogram_tester_;
 
@@ skipping 204 matching lines @@
 
   ui_test_utils::NavigateToURL(
       browser(), embedded_test_server()->GetURL(
                      "/page_load_metrics/document_write_no_script.html"));
   ui_test_utils::NavigateToURL(browser(),
                                embedded_test_server()->GetURL("/title2.html"));
 
   histogram_tester_.ExpectTotalCount(
       internal::kHistogramDocWriteBlockParseStartToFirstContentfulPaint, 0);
 }
+
+// Test code that aborts provisional navigations.
+// TODO(csharrison): Move these to unit tests once the navigation API in content
+// properly calls NavigationHandle/NavigationThrottle methods.
+IN_PROC_BROWSER_TEST_F(MetricsWebContentsObserverBrowserTest,
+                       AbortNewNavigation) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/title1.html"));
+  chrome::NavigateParams params(browser(), url, ui::PAGE_TRANSITION_LINK);
+  content::TestNavigationManager manager(
+      browser()->tab_strip_model()->GetActiveWebContents(), url);
+
+  chrome::Navigate(&params);
+  manager.WaitForWillStartRequest();
+
+  GURL url2(embedded_test_server()->GetURL("/title2.html"));
+  chrome::NavigateParams params2(browser(), url2,
+                                 ui::PAGE_TRANSITION_FROM_ADDRESS_BAR);
+  content::TestNavigationManager manager2(
+      browser()->tab_strip_model()->GetActiveWebContents(), url2);
+  chrome::Navigate(&params2);
+
+  manager2.WaitForNavigationFinished();
+  histogram_tester_.ExpectTotalCount(
+      internal::kHistogramAbortNewNavigationBeforeCommit, 1);
+}
+
+IN_PROC_BROWSER_TEST_F(MetricsWebContentsObserverBrowserTest, AbortReload) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/title1.html"));
+  chrome::NavigateParams params(browser(), url, ui::PAGE_TRANSITION_LINK);
+  content::TestNavigationManager manager(
+      browser()->tab_strip_model()->GetActiveWebContents(), url);
+
+  chrome::Navigate(&params);
+  manager.WaitForWillStartRequest();
+
+  chrome::NavigateParams params2(browser(), url, ui::PAGE_TRANSITION_RELOAD);
+  content::TestNavigationManager manager2(
+      browser()->tab_strip_model()->GetActiveWebContents(), url);
+  chrome::Navigate(&params2);
+
+  manager2.WaitForNavigationFinished();
+  histogram_tester_.ExpectTotalCount(
+      internal::kHistogramAbortReloadBeforeCommit, 1);
+}
+
+IN_PROC_BROWSER_TEST_F(MetricsWebContentsObserverBrowserTest, AbortClose) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/title1.html"));
+  chrome::NavigateParams params(browser(), url, ui::PAGE_TRANSITION_LINK);
+  content::TestNavigationManager manager(
+      browser()->tab_strip_model()->GetActiveWebContents(), url);
+
+  chrome::Navigate(&params);
+  manager.WaitForWillStartRequest();
+
+  browser()->tab_strip_model()->GetActiveWebContents()->Close();
+
+  manager.WaitForNavigationFinished();
+
+  histogram_tester_.ExpectTotalCount(internal::kHistogramAbortCloseBeforeCommit,
+                                     1);
+}
+
+IN_PROC_BROWSER_TEST_F(MetricsWebContentsObserverBrowserTest, AbortMultiple) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/title1.html"));
+  chrome::NavigateParams params(browser(), url, ui::PAGE_TRANSITION_LINK);
+  content::TestNavigationManager manager(
+      browser()->tab_strip_model()->GetActiveWebContents(), url);
+
+  chrome::Navigate(&params);
+  manager.WaitForWillStartRequest();
+
+  GURL url2(embedded_test_server()->GetURL("/title2.html"));
+  chrome::NavigateParams params2(browser(), url2, ui::PAGE_TRANSITION_TYPED);
+  content::TestNavigationManager manager2(
+      browser()->tab_strip_model()->GetActiveWebContents(), url2);
+  chrome::Navigate(&params2);
+
+  manager2.WaitForWillStartRequest();
+  manager.WaitForNavigationFinished();
+
+  GURL url3(embedded_test_server()->GetURL("/title3.html"));
+  chrome::NavigateParams params3(browser(), url3, ui::PAGE_TRANSITION_TYPED);
+  content::TestNavigationManager manager3(
+      browser()->tab_strip_model()->GetActiveWebContents(), url3);
+  chrome::Navigate(&params3);
+
+  manager3.WaitForWillStartRequest();
+  manager2.WaitForNavigationFinished();
+
+  manager3.WaitForNavigationFinished();
+
+  histogram_tester_.ExpectTotalCount(
+      internal::kHistogramAbortNewNavigationBeforeCommit, 2);
+}