Log mixed script shield events.

chrome/browser/content_settings/tab_specific_content_settings.cc

Index: chrome/browser/content_settings/tab_specific_content_settings.cc
diff --git a/chrome/browser/content_settings/tab_specific_content_settings.cc b/chrome/browser/content_settings/tab_specific_content_settings.cc
index d52e41d19b0c58e9e29c09dab70820ce11dffb55..118f63a34cec1890dcd650d18f91f3451b0e2a53 100644
--- a/chrome/browser/content_settings/tab_specific_content_settings.cc
+++ b/chrome/browser/content_settings/tab_specific_content_settings.cc
@@ -8,6 +8,7 @@
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
+#include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browsing_data/browsing_data_appcache_helper.h"
@@ -102,6 +103,13 @@ TabSpecificContentSettings::~TabSpecificContentSettings() {
       SiteDataObserver, observer_list_, ContentSettingsDestroyed());
 }
 
+void TabSpecificContentSettings::RecordMixedScriptAction(
+    MixedScriptAction action) {
+  UMA_HISTOGRAM_ENUMERATION("ContentSettings.MixedScript",
+                            action,
+                            MIXED_SCRIPT_ACTION_COUNT);
+}
+
 TabSpecificContentSettings* TabSpecificContentSettings::Get(
     int render_process_id, int render_view_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ -324,6 +332,9 @@ void TabSpecificContentSettings::OnContentBlocked(ContentSettingsType type) {
         chrome::NOTIFICATION_WEB_CONTENT_SETTINGS_CHANGED,
         content::Source<WebContents>(web_contents()),
         content::NotificationService::NoDetails());
+
+    if (type == CONTENT_SETTINGS_TYPE_MIXEDSCRIPT)
+      RecordMixedScriptAction(MIXED_SCRIPT_ACTION_DISPLAYED_SHIELD);
   }
 }