Add Rappor reporting for grant/deny/cancel/ignore of Mediastream permissions

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 85dbe53b06b4dffb2badb6f6f8f1528700e136fb..838be7895c729a9a8ccf3470addcee6e68f02d0c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -17881,6 +17881,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="Media.DevicePermissionActions" enum="DevicePermissionActions">
+  <obsolete>
+    Removed 10/2015 in favor of Permissions.Action.
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     Measures the actions taken in the media infobar, which prompts the users for
@@ -31545,6 +31548,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Permissions.Action" enum="PermissionAction">
+  <owner>miguelg@chromium.org</owner>
+  <owner>mlamouri@chromium.org</owner>
+  <summary>
+    Tracks whether a permission was granted, rejected, etc. The suffix of the
+    histogram indicates which particular permission.
+  </summary>
+</histogram>
+
 <histogram name="Permissions.Requested.CrossOrigin" enum="PermissionStatus">
   <owner>keenanb@google.com</owner>
   <owner>jww@chromium.org</owner>
@@ -76934,6 +76946,19 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="PLT.LoadType"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="ContentSettingsTypes">
+  <suffix name="MidiSysEx" label="Midi SysEx permsision actions"/>
+  <suffix name="PushMessaging" label="Push messaging permission actions"/>
+  <suffix name="Notifications" label="Notification permission actions"/>
+  <suffix name="Geolocation" label="Geolocation permission actions"/>
+  <suffix name="ProtectedMedia" label="Protected media permission actions"/>
+  <suffix name="DurableStorage" label="Durable Storage permission actions"/>
+  <affected-histogram name="ContentSettings.PermissionActions"/>
+  <affected-histogram name="ContentSettings.PermissionActionsInsecureOrigin"/>
+  <affected-histogram name="ContentSettings.PermissionActionsSecureOrigin"/>
+  <affected-histogram name="Permissions.Requested.CrossOrigin"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="ContextMenuType" separator=".">
   <suffix name="Link" label="The context menu was shown for a link"/>
   <suffix name="Image" label="The context menu was shown for an image"/>
@@ -80044,17 +80069,10 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="PerformanceMonitor.HighCPU"/>
 </histogram_suffixes>
 
-<histogram_suffixes name="PermissionTypes">
-  <suffix name="MidiSysEx" label="Midi SysEx permsision actions"/>
-  <suffix name="PushMessaging" label="Push messaging permission actions"/>
-  <suffix name="Notifications" label="Notification permission actions"/>
-  <suffix name="Geolocation" label="Geolocation permission actions"/>
-  <suffix name="ProtectedMedia" label="Protected media permission actions"/>
-  <suffix name="DurableStorage" label="Durable Storage permission actions"/>
-  <affected-histogram name="ContentSettings.PermissionActions"/>
-  <affected-histogram name="ContentSettings.PermissionActionsInsecureOrigin"/>
-  <affected-histogram name="ContentSettings.PermissionActionsSecureOrigin"/>
-  <affected-histogram name="Permissions.Requested.CrossOrigin"/>
+<histogram_suffixes name="PermissionTypes" separator=".">
+  <suffix name="AudioCapture" label="Microphone permission actions"/>
+  <suffix name="VideoCapture" label="Camera permission actions"/>
+  <affected-histogram name="Permissions.Action"/>
 </histogram_suffixes>
 
 <histogram_suffixes name="PNaClTranslatorTypes" separator=".">