Remove kIgnoreResolutionLimitsForAcceleratedVideoDecode flag

content/common/gpu/media/v4l2_video_decode_accelerator.cc

Index: content/common/gpu/media/v4l2_video_decode_accelerator.cc
diff --git a/content/common/gpu/media/v4l2_video_decode_accelerator.cc b/content/common/gpu/media/v4l2_video_decode_accelerator.cc
index 186d92086e776d78da2ace497b82718bb0206e29..05f2a0e42e6d62a8c9538ee5b89b9db1182fcb39 100644
--- a/content/common/gpu/media/v4l2_video_decode_accelerator.cc
+++ b/content/common/gpu/media/v4l2_video_decode_accelerator.cc
@@ -454,18 +454,13 @@ V4L2VideoDecodeAccelerator::GetSupportedProfiles() {
 
   SupportedProfile profile;
   profile.min_resolution.SetSize(16, 16);
-  // NOTE: additional autodetection logic may require updating input buffer size
-  // selection.
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kIgnoreResolutionLimitsForAcceleratedVideoDecode))
-    profile.max_resolution.SetSize(4096, 2160);
-  else
-    profile.max_resolution.SetSize(1920, 1088);
-
   v4l2_fmtdesc fmtdesc;
   memset(&fmtdesc, 0, sizeof(fmtdesc));
   fmtdesc.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
   for (; device->Ioctl(VIDIOC_ENUM_FMT, &fmtdesc) == 0; ++fmtdesc.index) {
+    // Get maximum resolution for each format
+    profile.max_resolution = V4L2Device::GetMaxSupportedResolution(
+        device, fmtdesc.pixelformat);
     switch (fmtdesc.pixelformat) {
       case V4L2_PIX_FMT_H264:
         for (uint32 media_profile = media::H264PROFILE_MIN;
@@ -1799,8 +1794,9 @@ bool V4L2VideoDecodeAccelerator::SetupFormats() {
   }
 
   size_t input_size;
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kIgnoreResolutionLimitsForAcceleratedVideoDecode))
+  gfx::Size max_resolution = V4L2Device::GetMaxSupportedResolution(
+      device_, input_format_fourcc);
+  if (max_resolution.width() >= 4096 && max_resolution.height() >= 2160)
     input_size = kInputBufferMaxSizeFor4k;
   else
     input_size = kInputBufferMaxSizeFor1080p;