Split BrowserThread into public API and private implementation, step 1.

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 1d5fe4de17c8818757b2d89297f3ebcda49beb8f..26b7af03ea69ed69624764ffedf5d77de2edeb82 100644
--- a/chrome/browser/autofill/autofill_metrics_unittest.cc
+++ b/chrome/browser/autofill/autofill_metrics_unittest.cc
@@ -14,12 +14,12 @@
 #include "chrome/browser/autofill/autofill_metrics.h"
 #include "chrome/browser/autofill/personal_data_manager.h"
 #include "chrome/browser/autofill/personal_data_manager_factory.h"
-#include "chrome/browser/webdata/web_data_service.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/tab_contents/test_tab_contents_wrapper.h"
+#include "chrome/browser/webdata/web_data_service.h"
 #include "chrome/test/base/testing_profile.h"
-#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
-#include "content/browser/browser_thread.h"
 #include "content/browser/tab_contents/test_tab_contents.h"
+#include "content/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/glue/form_data.h"
@@ -233,7 +233,7 @@ class AutofillMetricsTest : public TabContentsWrapperTestHarness {
   TestPersonalDataManager personal_data_;
 
  private:
-  BrowserThread browser_thread_;
+  content::TestBrowserThread browser_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(AutofillMetricsTest);
 };