Win Video Capture: Add device blacklisting, used for IPCamera and YouCam, collect UMA for those

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 93209b724dee46694d5a3e675ac879e13d7a9ecf..dbb02a62154af2b72e181b44622e1acfa1b37da3 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -12237,6 +12237,16 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Media.VideoCapture.BlacklistedDevice"
+    enum="BlacklistedVideoCaptureDeviceNames">
+  <owner>mcasas@chromium.org</owner>
+  <summary>
+    Counts appearances of Blacklisted Video Capture devices during enumeration.
+    This collection happens during first enumeration in the appropriate
+    platforms' VideoCaptureDeviceFactory.
+  </summary>
+</histogram>
+
 <histogram name="Media.VideoCapture.FrameRate" units="fps">
   <owner>mcasas@chromium.org</owner>
   <summary>
@@ -39341,6 +39351,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="2" label="1+"/>
 </enum>
 
+<enum name="BlacklistedVideoCaptureDeviceNames" type="int">
+  <int value="0" label="IP Camera"/>
+  <int value="1" label="Cyberlink YouCam"/>
+</enum>
+
 <enum name="BlacklistSetup" type="int">
   <int value="0" label="Blacklist enabled"/>
   <int value="1" label="Blacklist ran successfully."/>