Switch ChromeTestSuite to the same convention as ContentTestSuite:

chrome/browser/history/history_unittest_base.h

Index: chrome/browser/history/history_unittest_base.h
diff --git a/chrome/browser/history/history_unittest_base.h b/chrome/browser/history/history_unittest_base.h
index 4e5fbb1417635c278c4b8c49033b4bf865faa36d..1d9512d617230eedad312f935b16d866e1a91470 100644
--- a/chrome/browser/history/history_unittest_base.h
+++ b/chrome/browser/history/history_unittest_base.h
@@ -6,13 +6,12 @@
 #define CHROME_BROWSER_HISTORY_HISTORY_UNITTEST_BASE_H_
 
 #include "base/file_util.h"
-#include "chrome/test/base/testing_browser_process_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace history {
 // A base class for a history unit test. It provides the common test methods.
 //
-class HistoryUnitTestBase : public TestingBrowserProcessTest {
+class HistoryUnitTestBase : public testing::Test {
  public:
   virtual ~HistoryUnitTestBase();