content/browser/renderer_host/frame_metadata_util.h

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_
   7
   8 #include "content/common/content_export.h"
   9
  10 namespace cc {
  11 class CompositorFrameMetadata;
  12 }
  13
  14 namespace content {
  15
  16 // Decides whether frame metadata corresponds to mobile-optimized content.
  17 // By default returns |false|, except for the following cases:
  18 // - page that has a width=device-width or narrower viewport
  19 //   (indicating that this is a mobile-optimized or responsive web design);
  20 // - page that prevents zooming in or out.
  21 CONTENT_EXPORT bool IsMobileOptimizedFrame(
  22     const cc::CompositorFrameMetadata& frame_metadata);
  23
  24 }  // namespace content
  25
  26 #endif  // CONTENT_BROWSER_RENDERER_HOST_FRAME_METADATA_UTIL_H_