Refactor ViewsDelegate and MD-ify the icon-to-text spacing for checkbox and radiobutton

chrome/test/base/chrome_render_view_host_test_harness.cc

Index: chrome/test/base/chrome_render_view_host_test_harness.cc
diff --git a/chrome/test/base/chrome_render_view_host_test_harness.cc b/chrome/test/base/chrome_render_view_host_test_harness.cc
index 950fd1b6a6374d0db49822d4d7a7937b9b9c4cf1..e121da2af83aa3c477e95617b099df016f1dbbcf 100644
--- a/chrome/test/base/chrome_render_view_host_test_harness.cc
+++ b/chrome/test/base/chrome_render_view_host_test_harness.cc
@@ -6,6 +6,7 @@
 
 #include <utility>
 
+#include "base/memory/ptr_util.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/signin/account_tracker_service_factory.h"
@@ -49,8 +50,8 @@ std::unique_ptr<KeyedService> BuildSigninManagerFake(
 
 }  // namespace
 
-ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness() {
-}
+ChromeRenderViewHostTestHarness::ChromeRenderViewHostTestHarness()
+    : views_delegate_(base::MakeUnique<views::TestViewsDelegate>()) {}
 
 ChromeRenderViewHostTestHarness::~ChromeRenderViewHostTestHarness() {
 }