screenshot disabling policy

chrome/browser/extensions/api/tabs/tabs.cc

Index: chrome/browser/extensions/api/tabs/tabs.cc
diff --git a/chrome/browser/extensions/api/tabs/tabs.cc b/chrome/browser/extensions/api/tabs/tabs.cc
index 3d80a52e7ef640dd813a48194a717a80f717f276..14fed5b083be3b7f67468ffbdffc3b58b540a4fe 100644
--- a/chrome/browser/extensions/api/tabs/tabs.cc
+++ b/chrome/browser/extensions/api/tabs/tabs.cc
@@ -19,6 +19,7 @@
 #include "base/string_util.h"
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/extensions/extension_function_util.h"
@@ -30,6 +31,7 @@
 #include "chrome/browser/extensions/extension_window_list.h"
 #include "chrome/browser/extensions/script_executor.h"
 #include "chrome/browser/prefs/incognito_mode_prefs.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/restore_tab_helper.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
@@ -1599,6 +1601,12 @@ bool CaptureVisibleTabFunction::GetTabToCapture(
 };
 
 bool CaptureVisibleTabFunction::RunImpl() {
+  PrefService* service = profile()->GetPrefs();
+  if (service->GetBoolean(prefs::kDisableScreenshots)) {
+    error_ = keys::kScreenshotsDisabled;
+    return false;
+  }
+
   WebContents* web_contents = NULL;
   TabContents* tab_contents = NULL;
   if (!GetTabToCapture(&web_contents, &tab_contents))