[Autofill] Add UMA timing metrics for requestAutocomplete dialog.

chrome/browser/autofill/autofill_metrics_unittest.cc

Index: chrome/browser/autofill/autofill_metrics_unittest.cc
diff --git a/chrome/browser/autofill/autofill_metrics_unittest.cc b/chrome/browser/autofill/autofill_metrics_unittest.cc
index 0141830e4ce215f3dddf3b1239e6605b77629995..bfcf24188d84b08e94716905149567df3ae4b7bc 100644
--- a/chrome/browser/autofill/autofill_metrics_unittest.cc
+++ b/chrome/browser/autofill/autofill_metrics_unittest.cc
@@ -261,7 +261,7 @@ class TestAutofillManager : public AutofillManager {
   DISALLOW_COPY_AND_ASSIGN(TestAutofillManager);
 };
 
-class TestAutocheckoutManager : public AutocheckoutManager {
+class TestAutocheckoutManager : public autofill::AutocheckoutManager {
  public:
   explicit TestAutocheckoutManager(AutofillManager* autofill_manager)
       : AutocheckoutManager(autofill_manager) {
@@ -330,11 +330,11 @@ void AutofillMetricsTest::SetUp() {
   PersonalDataManagerFactory::GetInstance()->SetTestingFactory(profile, NULL);
 
   ChromeRenderViewHostTestHarness::SetUp();
-  TabAutofillManagerDelegate::CreateForWebContents(web_contents());
+  autofill::TabAutofillManagerDelegate::CreateForWebContents(web_contents());
   personal_data_.SetBrowserContext(profile);
   autofill_manager_ = new TestAutofillManager(
       web_contents(),
-      TabAutofillManagerDelegate::FromWebContents(web_contents()),
+      autofill::TabAutofillManagerDelegate::FromWebContents(web_contents()),
       &personal_data_);
 
   file_thread_.Start();
@@ -382,7 +382,7 @@ AutofillMetricsTest::CreateAutocheckoutDelegate(
               LogAutocheckoutInfoBarMetric(AutofillMetrics::INFOBAR_SHOWN));
   GURL url("www.google.com");
   content::SSLStatus ssl_status;
-  return AutocheckoutInfoBarDelegate::Create(
+  return autofill::AutocheckoutInfoBarDelegate::Create(
       *metric_logger,
       url,
       ssl_status,