[Media Router] Add UMA histograms tracking component extension version/wakeups

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 d53cd2d558ba6ed414a220190b0d16c7b67e6b08..fe05d301be3e44367f73fcf24340b07905e71ce6 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -21000,6 +21000,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>Location the user clicked to open the Media Router dialog.</summary>
 </histogram>
 
+<histogram name="MediaRouter.Provider.Version" enum="MediaRouteProviderVersion">
+  <owner>mfoltz@chromium.org</owner>
+  <summary>
+    Records how the major version of the Media Router component extension
+    compares to the major version of the browser.
+  </summary>
+</histogram>
+
 <histogram name="MediaRouter.Provider.WakeReason"
     enum="MediaRouteProviderWakeReason">
   <owner>mfoltz@chromium.org</owner>
@@ -21008,6 +21016,13 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="MediaRouter.Provider.Wakeup" enum="MediaRouteProviderWakeup">
+  <owner>mfoltz@chromium.org</owner>
+  <summary>
+    Records the outcome of waking the Media Router component's event page.
+  </summary>
+</histogram>
+
 <histogram name="MediaRouter.Route.CreationOutcome"
     units="MediaRouterCreateRouteOutcome">
   <owner>apacible@chromium.org</owner>
@@ -74355,6 +74370,13 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="1" label="Has errors"/>
 </enum>
 
+<enum name="MediaRouteProviderVersion" type="int">
+  <int value="0" label="Unknown"/>
+  <int value="1" label="SameVersionAsChrome"/>
+  <int value="2" label="OneVersionBehindChrome"/>
+  <int value="3" label="MultipleVersionsBehindChrome"/>
+</enum>
+
 <enum name="MediaRouteProviderWakeReason" type="int">
   <int value="0" label="CreateRoute"/>
   <int value="1" label="JoinRoute"/>
@@ -74373,6 +74395,12 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="14" label="ConnectRouteByRouteId"/>
 </enum>
 
+<enum name="MediaRouteProviderWakeup" type="int">
+  <int value="0" label="Success"/>
+  <int value="1" label="ErrorUnknown"/>
+  <int value="2" label="ErrorTooManyRetries"/>
+</enum>
+
 <enum name="MediaRouterCreateRouteOutcome" type="int">
   <int value="0" label="Success"/>
   <int value="1" label="Failure No Route"/>