Fix up various browser tests not to use WaitForNavigation.

chrome/browser/ui/find_bar/find_bar_host_browsertest.cc

Index: chrome/browser/ui/find_bar/find_bar_host_browsertest.cc
diff --git a/chrome/browser/ui/find_bar/find_bar_host_browsertest.cc b/chrome/browser/ui/find_bar/find_bar_host_browsertest.cc
index 5445484514665511a1ad70962e1f14e518a8221d..f5697721fe9ef5163b3f8a6bb63b38c6c1a2e613 100644
--- a/chrome/browser/ui/find_bar/find_bar_host_browsertest.cc
+++ b/chrome/browser/ui/find_bar/find_bar_host_browsertest.cc
@@ -581,8 +581,12 @@ IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, FindDisappearOnNavigate) {
   EXPECT_TRUE(fully_visible);
 
   // Reload the tab and make sure Find window doesn't go away.
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP,
+      Source<NavigationController>(
+          &browser()->GetSelectedTabContentsWrapper()->controller()));
   browser()->Reload(CURRENT_TAB);
-  ui_test_utils::WaitForNavigationInCurrentTab(browser());
+  observer.Wait();
 
   EXPECT_TRUE(GetFindBarWindowInfo(&position, &fully_visible));
   EXPECT_TRUE(fully_visible);
@@ -1048,9 +1052,10 @@ IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, MAYBE_NoIncognitoPrepopulate) {
   // Open a new incognito window and navigate to the same page.
   Profile* incognito_profile = browser()->profile()->GetOffTheRecordProfile();
   Browser* incognito_browser = Browser::Create(incognito_profile);
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP, NotificationService::AllSources());
   incognito_browser->AddSelectedTabWithURL(url, PageTransition::START_PAGE);
-  ui_test_utils::WaitForNavigation(
-      &incognito_browser->GetSelectedTabContents()->controller());
+  observer.Wait();
   incognito_browser->window()->Show();
 
   // Open the find box and make sure that it is prepopulated with "page".
@@ -1093,8 +1098,11 @@ IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, ActivateLinkNavigatesPage) {
   EXPECT_EQ(ordinal, 1);
 
   // End the find session, click on the link.
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP,
+      Source<NavigationController>(&tab->controller()));
   tab->find_tab_helper()->StopFinding(FindBarController::kActivateSelection);
-  EXPECT_TRUE(ui_test_utils::WaitForNavigationInCurrentTab(browser()));
+  observer.Wait();
 }
 
 // Tests that FindBar fits within a narrow browser window.
@@ -1102,12 +1110,12 @@ IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, FitWindow) {
   Browser::CreateParams params(Browser::TYPE_POPUP, browser()->profile());
   params.initial_bounds = gfx::Rect(0, 0, 250, 500);
   Browser* popup = Browser::CreateWithParams(params);
+  ui_test_utils::WindowedNotificationObserver observer(
+      content::NOTIFICATION_LOAD_STOP, NotificationService::AllSources());
   popup->AddSelectedTabWithURL(GURL(chrome::kAboutBlankURL),
                                PageTransition::LINK);
-
   // Wait for the page to finish loading.
-  ui_test_utils::WaitForNavigation(
-      &popup->GetSelectedTabContents()->controller());
+  observer.Wait();
   popup->window()->Show();
 
   // On GTK, bounds change is asynchronous.