Video Capture: Allow 0 fps frame rates to be deserializable

media/video/capture/video_capture_types.cc

Index: media/video/capture/video_capture_types.cc
diff --git a/media/video/capture/video_capture_types.cc b/media/video/capture/video_capture_types.cc
index 7dcc7a02e7f6fbefddc19d37109b51776974537b..fa78f427489154e52784345f34654ed68de15b70 100644
--- a/media/video/capture/video_capture_types.cc
+++ b/media/video/capture/video_capture_types.cc
@@ -9,7 +9,7 @@
 namespace media {
 
 VideoCaptureFormat::VideoCaptureFormat()
-    : frame_rate(0), pixel_format(PIXEL_FORMAT_UNKNOWN) {}
+    : frame_rate(0.0f), pixel_format(PIXEL_FORMAT_UNKNOWN) {}
 
 VideoCaptureFormat::VideoCaptureFormat(const gfx::Size& frame_size,
                                        float frame_rate,
@@ -23,7 +23,7 @@ bool VideoCaptureFormat::IsValid() const {
          (frame_size.height() < media::limits::kMaxDimension) &&
          (frame_size.GetArea() >= 0) &&
          (frame_size.GetArea() < media::limits::kMaxCanvas) &&
-         (frame_rate > 0) &&
+         (frame_rate >= 0.0f) &&
          (frame_rate < media::limits::kMaxFramesPerSecond) &&
          (pixel_format >= PIXEL_FORMAT_UNKNOWN) &&
          (pixel_format < PIXEL_FORMAT_MAX);