GTTF: Use a fresh TestingBrowserProcess for each test, part #4

chrome/browser/download/download_manager_unittest.cc

Index: chrome/browser/download/download_manager_unittest.cc
diff --git a/chrome/browser/download/download_manager_unittest.cc b/chrome/browser/download/download_manager_unittest.cc
index 25ad24e8a92c78e1fd466705d12c4bf30192b52b..18dababfda4cf57dc35730ffa87f71898faae8e4 100644
--- a/chrome/browser/download/download_manager_unittest.cc
+++ b/chrome/browser/download/download_manager_unittest.cc
@@ -28,6 +28,7 @@
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_profile.h"
+#include "chrome/test/testing_browser_process_test.h"
 #include "content/browser/browser_thread.h"
 #include "grit/generated_resources.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -36,7 +37,7 @@
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/text/bytes_formatting.h"
 
-class DownloadManagerTest : public testing::Test {
+class DownloadManagerTest : public TestingBrowserProcessTest {
  public:
   static const char* kTestData;
   static const size_t kTestDataLen;