Remove multi-install from chrome/installer/setup.

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 7eb08c64ad2ae4560e7d25c20e26d46dc304714e..bad0d4062da0d56d2e3a057dc3aa1d0d86ea2375 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -60332,6 +60332,22 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Setup.Install.AppHostRemoved" enum="BooleanHit">
+  <owner>grt@chromium.org</owner>
+  <summary>
+    Hit following a successful install or update when the legacy
+    &quot;app_host.exe&quot; binary is deleted from the filesystem.
+  </summary>
+</histogram>
+
+<histogram name="Setup.Install.AppLauncherRemoved" enum="BooleanHit">
+  <owner>grt@chromium.org</owner>
+  <summary>
+    Hit following a successful install or update when the legacy &quot;app
+    launcher&quot; Clients key is deleted from the registry.
+  </summary>
+</histogram>
+
 <histogram name="Setup.Install.ApplyArchivePatchTime" units="ms">
   <owner>grt@chromium.org</owner>
   <summary>
@@ -60341,6 +60357,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Setup.Install.BinariesRemoved" enum="BooleanHit">
+  <owner>grt@chromium.org</owner>
+  <summary>
+    Hit following a successful install or update when the legacy
+    &quot;binaries&quot; Clients key is deleted from the registry.
+  </summary>
+</histogram>
+
 <histogram name="Setup.Install.HasArchivePatch" enum="Boolean">
   <owner>grt@chromium.org</owner>
   <summary>
@@ -60350,6 +60374,15 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Setup.Install.InstallExtensionCommandRemoved"
+    enum="BooleanHit">
+  <owner>grt@chromium.org</owner>
+  <summary>
+    Hit following a successful install or update when the legacy
+    &quot;install-extension&quot; app command is deleted from the registry.
+  </summary>
+</histogram>
+
 <histogram name="Setup.Install.LzmaUnPackNTSTATUS" enum="NTSTATUS">
   <owner>zmin@chromium.org</owner>
   <summary>
@@ -60362,6 +60395,14 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   <summary>Record the status of unpacking the contents of a 7z file.</summary>
 </histogram>
 
+<histogram name="Setup.Install.MultiChromeFrameRemoved" enum="BooleanHit">
+  <owner>grt@chromium.org</owner>
+  <summary>
+    Hit following a successful install or update when data from a legacy
+    multi-install Chrome Frame is deleted from the registry.
+  </summary>
+</histogram>
+
 <histogram name="Setup.Install.NumDeleteOldVersionsAttemptsBeforeAbort"
     units="Attempts">
   <owner>fdoray@chromium.org</owner>