Added BitsPerChannel method to video frame class.

cc/resources/video_resource_updater.cc

Index: cc/resources/video_resource_updater.cc
diff --git a/cc/resources/video_resource_updater.cc b/cc/resources/video_resource_updater.cc
index 295e2811d3717238276ffba37e63b84c2a8f62c2..d0b1c88389b25da812ebfa02115a589d6e2c9aa9 100644
--- a/cc/resources/video_resource_updater.cc
+++ b/cc/resources/video_resource_updater.cc
@@ -385,50 +385,7 @@ VideoFrameExternalResources VideoResourceUpdater::CreateForSoftwarePlanes(
   TRACE_EVENT0("cc", "VideoResourceUpdater::CreateForSoftwarePlanes");
   const media::VideoPixelFormat input_frame_format = video_frame->format();
 
-  // TODO(hubbe): Make this a video frame method.
-  int bits_per_channel = 0;
-  switch (input_frame_format) {
-    case media::PIXEL_FORMAT_UNKNOWN:
-      NOTREACHED();
-    // Fall through!
-    case media::PIXEL_FORMAT_I420:
-    case media::PIXEL_FORMAT_YV12:
-    case media::PIXEL_FORMAT_YV16:
-    case media::PIXEL_FORMAT_YV12A:
-    case media::PIXEL_FORMAT_YV24:
-    case media::PIXEL_FORMAT_NV12:
-    case media::PIXEL_FORMAT_NV21:
-    case media::PIXEL_FORMAT_UYVY:
-    case media::PIXEL_FORMAT_YUY2:
-    case media::PIXEL_FORMAT_ARGB:
-    case media::PIXEL_FORMAT_XRGB:
-    case media::PIXEL_FORMAT_RGB24:
-    case media::PIXEL_FORMAT_RGB32:
-    case media::PIXEL_FORMAT_MJPEG:
-    case media::PIXEL_FORMAT_MT21:
-    case media::PIXEL_FORMAT_Y8:
-    case media::PIXEL_FORMAT_I422:
-      bits_per_channel = 8;
-      break;
-    case media::PIXEL_FORMAT_YUV420P9:
-    case media::PIXEL_FORMAT_YUV422P9:
-    case media::PIXEL_FORMAT_YUV444P9:
-      bits_per_channel = 9;
-      break;
-    case media::PIXEL_FORMAT_YUV420P10:
-    case media::PIXEL_FORMAT_YUV422P10:
-    case media::PIXEL_FORMAT_YUV444P10:
-      bits_per_channel = 10;
-      break;
-    case media::PIXEL_FORMAT_YUV420P12:
-    case media::PIXEL_FORMAT_YUV422P12:
-    case media::PIXEL_FORMAT_YUV444P12:
-      bits_per_channel = 12;
-      break;
-    case media::PIXEL_FORMAT_Y16:
-      bits_per_channel = 16;
-      break;
-  }
+  int bits_per_channel = video_frame->BitsPerChannel(input_frame_format);
 
   // Only YUV and Y16 software video frames are supported.
   DCHECK(media::IsYuvPlanar(input_frame_format) ||