browser: Move FindTabbedBrowser() function into chrome namespace.

chrome/browser/captive_portal/captive_portal_browsertest.cc

Index: chrome/browser/captive_portal/captive_portal_browsertest.cc
diff --git a/chrome/browser/captive_portal/captive_portal_browsertest.cc b/chrome/browser/captive_portal/captive_portal_browsertest.cc
index fe3627125e67964d202cefec994efa942eee4145..255851e177a35c7264e9ccd468bd9203b8ecd453 100644
--- a/chrome/browser/captive_portal/captive_portal_browsertest.cc
+++ b/chrome/browser/captive_portal/captive_portal_browsertest.cc
@@ -2070,8 +2070,8 @@ IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, DISABLED_TwoWindows) {
   // when running multiple tests at once, the original browser window may
   // remain the profile's active window.
   Browser* active_browser =
-      browser::FindTabbedBrowser(browser()->profile(), true,
-                                 browser()->host_desktop_type());
+      chrome::FindTabbedBrowser(browser()->profile(), true,
+                                browser()->host_desktop_type());
   Browser* inactive_browser;
   if (active_browser == browser2) {
     // When only one test is running at a time, the new browser will probably be
@@ -2100,8 +2100,8 @@ IN_PROC_BROWSER_TEST_F(CaptivePortalBrowserTest, DISABLED_TwoWindows) {
   // Make sure the active window hasn't changed, and its new tab is
   // active.
   ASSERT_EQ(active_browser,
-            browser::FindTabbedBrowser(browser()->profile(), true,
-                                       browser()->host_desktop_type()));
+            chrome::FindTabbedBrowser(browser()->profile(), true,
+                                      browser()->host_desktop_type()));
   ASSERT_EQ(1, active_browser->tab_strip_model()->active_index());
 
   // Check that the only two navigated tabs were the new error tab in the