Update V8 histogram/counter API usage

chrome/test/base/chrome_unit_test_suite.h

Index: chrome/test/base/chrome_unit_test_suite.h
diff --git a/chrome/test/base/chrome_unit_test_suite.h b/chrome/test/base/chrome_unit_test_suite.h
index 0ac9eb4671ec2592f59c67bb5b50025bd4add8a3..1c1ddbdf437ba9c5788a6bf4e21dcdd0ae03ad33 100644
--- a/chrome/test/base/chrome_unit_test_suite.h
+++ b/chrome/test/base/chrome_unit_test_suite.h
@@ -10,10 +10,6 @@
 #include "base/files/file_path.h"
 #include "chrome/test/base/chrome_test_suite.h"
 
-namespace base {
-class StatsTable;
-}
-
 // Test suite for unit tests. Creates additional stub services that are not
 // needed for browser tests (e.g. a TestingBrowserProcess).
 class ChromeUnitTestSuite : public ChromeTestSuite {
@@ -32,7 +28,6 @@ class ChromeUnitTestSuite : public ChromeTestSuite {
   static void InitializeResourceBundle();
 
  private:
-  scoped_ptr<base::StatsTable> stats_table_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeUnitTestSuite);
 };