Record the initial state of the Physical Web at startup

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 5705fcf47993a258bed634cbb4585acfd061de96..de8feda59d873d60da562f5dcc7c3bf028860331 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -43246,6 +43246,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="PhysicalWeb.InitialState.IosChrome"
+    enum="PhysicalWebInitialStateIosChrome">
+  <owner>cco3@chromium.org</owner>
+  <owner>mattreynolds@chromium.org</owner>
+  <owner>mmocny@chromium.org</owner>
+  <summary>Initial state of the Physical Web in Chrome for iOS.</summary>
+</histogram>
+
 <histogram name="PhysicalWeb.ReferralDelay.OptInNotification" units="ms">
   <owner>cco3@chromium.org</owner>
   <owner>mattreynolds@chromium.org</owner>
@@ -96131,6 +96139,33 @@ value.
   <int value="4" label="REFERER_DIAGNOSTICS"/>
 </enum>
 
+<enum name="PhysicalWebInitialStateIosChrome" type="int">
+  <int value="0" label="OPTOUT_BTOFF_LOCOFF_UNAUTH"/>
+  <int value="1" label="OPTOUT_BTOFF_LOCOFF_AUTH"/>
+  <int value="2" label="OPTOUT_BTOFF_LOCON_UNAUTH"/>
+  <int value="3" label="OPTOUT_BTOFF_LOCON_AUTH"/>
+  <int value="4" label="OPTOUT_BTON_LOCOFF_UNAUTH"/>
+  <int value="5" label="OPTOUT_BTON_LOCOFF_AUTH"/>
+  <int value="6" label="OPTOUT_BTON_LOCON_UNAUTH"/>
+  <int value="7" label="OPTOUT_BTON_LOCON_AUTH"/>
+  <int value="8" label="OPTIN_BTOFF_LOCOFF_UNAUTH"/>
+  <int value="9" label="OPTIN_BTOFF_LOCOFF_AUTH"/>
+  <int value="10" label="OPTIN_BTOFF_LOCON_UNAUTH"/>
+  <int value="11" label="OPTIN_BTOFF_LOCON_AUTH"/>
+  <int value="12" label="OPTIN_BTON_LOCOFF_UNAUTH"/>
+  <int value="13" label="OPTIN_BTON_LOCOFF_AUTH"/>
+  <int value="14" label="OPTIN_BTON_LOCON_UNAUTH"/>
+  <int value="15" label="OPTIN_BTON_LOCON_AUTH"/>
+  <int value="16" label="ONBOARDING_BTOFF_LOCOFF_UNAUTH"/>
+  <int value="17" label="ONBOARDING_BTOFF_LOCOFF_AUTH"/>
+  <int value="18" label="ONBOARDING_BTOFF_LOCON_UNAUTH"/>
+  <int value="19" label="ONBOARDING_BTOFF_LOCON_AUTH"/>
+  <int value="20" label="ONBOARDING_BTON_LOCOFF_UNAUTH"/>
+  <int value="21" label="ONBOARDING_BTON_LOCOFF_AUTH"/>
+  <int value="22" label="ONBOARDING_BTON_LOCON_UNAUTH"/>
+  <int value="23" label="ONBOARDING_BTON_LOCON_AUTH"/>
+</enum>
+
 <enum name="PhysicalWebPreferenceStatus" type="int">
   <int value="0" label="OFF"/>
   <int value="1" label="ON"/>