screenshot disabling policy

chrome/browser/ui/window_snapshot/window_snapshot_win.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 "base/win/scoped_gdi_object.h"
 #include "base/win/scoped_hdc.h"
 #include "base/win/scoped_select_object.h"
 #include "ui/gfx/codec/png_codec.h"
@@ skipping 18 matching lines @@
   content_rect.right++;  // Match what PrintWindow wants.
 
   return gfx::Rect(content_rect.right - content_rect.left,
                    content_rect.bottom - content_rect.top);
 }
 
 }  // namespace
 
 namespace chrome {
 
-bool GrabWindowSnapshot(gfx::NativeWindow window_handle,
-                        std::vector<unsigned char>* png_representation,
-                        const gfx::Rect& snapshot_bounds) {
+bool GrabWindowSnapshotImpl(gfx::NativeWindow window_handle,
+                            std::vector<unsigned char>* png_representation,
+                            const gfx::Rect& snapshot_bounds) {
   DCHECK(snapshot_bounds.right() <= GetWindowBounds(window_handle).right());
   DCHECK(snapshot_bounds.bottom() <= GetWindowBounds(window_handle).bottom());
 
   // Create a memory DC that's compatible with the window.
   HDC window_hdc = GetWindowDC(window_handle);
   base::win::ScopedCreateDC mem_hdc(CreateCompatibleDC(window_hdc));
 
   BITMAPINFOHEADER hdr;
   gfx::CreateBitmapHeader(snapshot_bounds.width(),
                           snapshot_bounds.height(),
@@ skipping 39 matching lines @@
                         snapshot_bounds.width() * 4, true,
                         std::vector<gfx::PNGCodec::Comment>(),
                         png_representation);
 
   ReleaseDC(window_handle, window_hdc);
 
   return true;
 }
 
 }  // namespace chrome