screenshot disabling policy

chrome/browser/ui/window_snapshot/window_snapshot.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/window_snapshot/window_snapshot.h"
+
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
+
+namespace chrome {
+
+// Like GrabWindowSnapshot, but does not check if policy settings allow taking
+// screenshots. Implemented in a platform-specific way.
+bool GrabWindowSnapshotImpl(gfx::NativeWindow window,
+                            std::vector<unsigned char>* png_representation,
+                            const gfx::Rect& snapshot_bounds);
+
+bool GrabWindowSnapshot(
+    gfx::NativeWindow window,
+    std::vector<unsigned char>* png_representation,
+    const gfx::Rect& snapshot_bounds) {
+  if (g_browser_process->local_state()->GetBoolean(prefs::kDisableScreenshots))
+    return false;
+  return GrabWindowSnapshotImpl(window, png_representation, snapshot_bounds);
+}
+
+void RegisterScreenshotPrefs(PrefService* service) {
+  service->RegisterBooleanPref(prefs::kDisableScreenshots, false);
+}
+
+}  // namespace browser