Remove kIgnoreResolutionLimitsForAcceleratedVideoDecode flag

content/common/gpu/media/v4l2_device.cc

Index: content/common/gpu/media/v4l2_device.cc
diff --git a/content/common/gpu/media/v4l2_device.cc b/content/common/gpu/media/v4l2_device.cc
index 7629bac5e19109bc35c7eb065b72950a5b4582e0..8ff28659f9dfc9a639b6d787b0d4c39321632bb1 100644
--- a/content/common/gpu/media/v4l2_device.cc
+++ b/content/common/gpu/media/v4l2_device.cc
@@ -197,4 +197,36 @@ gfx::Size V4L2Device::CodedSizeFromV4L2Format(struct v4l2_format format) {
   return coded_size;
 }
 
+// static
+gfx::Size V4L2Device::GetMaxSupportedResolution(
+    const scoped_refptr<V4L2Device>& device,
+    unsigned int pixelformat) {
+  gfx::Size max_resolution;
+  v4l2_frmsizeenum frame_size;
+  memset(&frame_size, 0, sizeof(frame_size));
+  frame_size.pixel_format = pixelformat;
+  for (; device->Ioctl(VIDIOC_ENUM_FRAMESIZES, &frame_size) == 0;
+       ++frame_size.index) {
+    if (frame_size.type == V4L2_FRMIVAL_TYPE_DISCRETE) {
+      if (frame_size.discrete.width >
+              static_cast<unsigned int>(max_resolution.width()) &&
+          frame_size.discrete.height >
+              static_cast<unsigned int>(max_resolution.height())) {
+        max_resolution.SetSize(frame_size.discrete.width,
+                               frame_size.discrete.height);
+      }
+    } else if (frame_size.type == V4L2_FRMIVAL_TYPE_STEPWISE ||
+               frame_size.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
+      max_resolution.SetSize(frame_size.stepwise.max_width,
+                             frame_size.stepwise.max_height);
+    }
+  }
+  if (max_resolution.IsEmpty()) {
+    LOG(ERROR) << "GetMaxSupportedResolution failed for format "
+               << std::hex << pixelformat;
+    max_resolution.SetSize(1920, 1088);
+  }
+  return max_resolution;
+}
+
 }  //  namespace content