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

content/browser/site_instance_unittest.cc

Index: content/browser/site_instance_unittest.cc
diff --git a/content/browser/site_instance_unittest.cc b/content/browser/site_instance_unittest.cc
index c34e9c326ce9434cdcfda3ff97dd9cda4d94d4ef..9af7850985a3508557ceab76fd8e075ce3dcf03e 100644
--- a/content/browser/site_instance_unittest.cc
+++ b/content/browser/site_instance_unittest.cc
@@ -20,6 +20,7 @@
 #include "content/common/content_client.h"
 #include "content/common/content_constants.h"
 #include "content/common/url_constants.h"
+#include "chrome/test/testing_browser_process_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ -62,7 +63,7 @@ class SiteInstanceTestBrowserClient : public content::MockContentBrowserClient {
   SiteInstanceTestWebUIFactory factory_;
 };
 
-class SiteInstanceTest : public testing::Test {
+class SiteInstanceTest : public TestingBrowserProcessTest {
  public:
   SiteInstanceTest()
       : ui_thread_(BrowserThread::UI, &message_loop_),