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

chrome/browser/safe_browsing/malware_details_unittest.cc

Index: chrome/browser/safe_browsing/malware_details_unittest.cc
diff --git a/chrome/browser/safe_browsing/malware_details_unittest.cc b/chrome/browser/safe_browsing/malware_details_unittest.cc
index 807d9feb5b5182c6e144e9afc012564cc1c6dc86..dc9580ca5c4c2a60dd68d2e0a556c4d316d5fc7c 100644
--- a/chrome/browser/safe_browsing/malware_details_unittest.cc
+++ b/chrome/browser/safe_browsing/malware_details_unittest.cc
@@ -18,9 +18,9 @@
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "chrome/test/base/test_url_request_context_getter.h"
 #include "chrome/test/base/testing_profile.h"
-#include "content/browser/browser_thread.h"
 #include "content/browser/tab_contents/navigation_entry.h"
 #include "content/browser/tab_contents/test_tab_contents.h"
+#include "content/test/test_browser_thread.h"
 #include "net/base/io_buffer.h"
 #include "net/base/test_completion_callback.h"
 #include "net/disk_cache/disk_cache.h"
@@ -304,8 +304,8 @@ class MalwareDetailsTest : public ChromeRenderViewHostTestHarness {
         *redirects, history::SOURCE_BROWSED, false);
   }
 
-  BrowserThread ui_thread_;
-  BrowserThread io_thread_;
+  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThread io_thread_;
   scoped_refptr<MockSafeBrowsingService> sb_service_;
 };