Move histograms and supporting code that don't belong in content out.

chrome/browser/ui/cocoa/applescript/window_applescript.mm

Index: chrome/browser/ui/cocoa/applescript/window_applescript.mm
diff --git a/chrome/browser/ui/cocoa/applescript/window_applescript.mm b/chrome/browser/ui/cocoa/applescript/window_applescript.mm
index fe9e055f79c28f97c054d3bb1d871f6e0898eda8..fe6677fe26e8f609188e71230db0657d09ef2cc0 100644
--- a/chrome/browser/ui/cocoa/applescript/window_applescript.mm
+++ b/chrome/browser/ui/cocoa/applescript/window_applescript.mm
@@ -21,6 +21,7 @@
 #include "chrome/browser/ui/cocoa/applescript/error_applescript.h"
 #import "chrome/browser/ui/cocoa/applescript/tab_applescript.h"
 #include "chrome/browser/ui/host_desktop.h"
+#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/web_contents.h"
@@ -179,7 +180,8 @@
       browser_,
       GURL(chrome::kChromeUINewTabURL),
       content::PAGE_TRANSITION_TYPED);
-  contents->SetNewTabStartTime(newTabStartTime);
+  CoreTabHelper* core_tab_helper = CoreTabHelper::FromWebContents(contents);
+  core_tab_helper->set_new_tab_start_time(newTabStartTime);
   [aTab setWebContents:contents];
 }
 
@@ -196,7 +198,9 @@
   params.disposition = NEW_FOREGROUND_TAB;
   params.tabstrip_index = index;
   chrome::Navigate(&params);
-  params.target_contents->SetNewTabStartTime(newTabStartTime);
+  CoreTabHelper* core_tab_helper =
+      CoreTabHelper::FromWebContents(params.target_contents);
+  core_tab_helper->set_new_tab_start_time(newTabStartTime);
 
   [aTab setWebContents:params.target_contents];
 }