Adds a new UMA histogram to measure the NTP load time since navigation

chrome/renderer/searchbox/searchbox.cc

Index: chrome/renderer/searchbox/searchbox.cc
diff --git a/chrome/renderer/searchbox/searchbox.cc b/chrome/renderer/searchbox/searchbox.cc
index 87084c720bb7b6ee0a2fd792b5ed5c06f396990c..4748d5ca92b4e7de6476bf56994f6ef4df04f5cc 100644
--- a/chrome/renderer/searchbox/searchbox.cc
+++ b/chrome/renderer/searchbox/searchbox.cc
@@ -162,11 +162,11 @@ SearchBox::~SearchBox() {
 void SearchBox::LogEvent(NTPLoggingEventType event) {
   // navigation_start in ms.
   uint64 start = 1000 *
-                render_view()
-                    ->GetMainRenderFrame()
-                    ->GetWebFrame()
-                    ->performance()
-                    .navigationStart();
+                 render_view()
+                     ->GetMainRenderFrame()
+                     ->GetWebFrame()
+                     ->performance()
+                     .navigationStart();
   uint64 now =
       (base::TimeTicks::Now() - base::TimeTicks::UnixEpoch()).InMilliseconds();
   DCHECK(now >= start);