Add UMA metrics for ffmpeg color ranges.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 8b4fcd93b193e90ec6017953e19e387cb4afbb89..fefd865fce53dcc210a7422999c9f873cf39b499 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -6206,6 +6206,14 @@ other types of suffix sets.
   <summary>Coded width of HTML5 video.</summary>
 </histogram>
 
+<histogram name="Media.VideoColorRange">
+  <summary>Pixel format color range of HTML5 video.</summary>
+</histogram>
+
+<histogram name="Media.VideoPixelFormat">
+  <summary>Pixel format of HTML5 video.</summary>
+</histogram>
+
 <histogram name="Media.VideoVisibleAspectRatio">
   <summary>Visible aspect ratio of HTML5 video.</summary>
 </histogram>
@@ -22642,6 +22650,14 @@ other types of suffix sets.
   <int value="1950507339" label="TAK"/>
 </enum>
 
+<enum name="FFmpegColorRanges" type="int">
+  <int value="0" label="UNSPECIFIED"/>
+  <int value="1" label="MPEG"/>
+  <int value="2" label="JPEG"/>
+</enum>
+
+<enum name="FFmpegPixelFormats" type="int"/>
+
 <enum name="FileDialogType" type="int">
   <int value="0" label="Select folder"/>
   <int value="1" label="Save as file"/>