[Files.app] Record metrics in the suggest apps dialog

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 6a1961d47885f08227f44d481fd0415d107e8a0c..63dc630cfbd3299f244a569480672caf56a543e0 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -4857,6 +4857,36 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="FileBrowser.SuggestApps.Close"
+    enum="SuggestAppsDialogCloseReason">
+  <summary>
+    Chrome OS File Browser: the reason why the suggest apps dialog was closed.
+  </summary>
+</histogram>
+
+<histogram name="FileBrowser.SuggestApps.Install"
+    enum="SuggestAppsDialogInstall">
+  <summary>
+    Chrome OS File Browser: whether the Webstore item user selected was
+    successfully installed or not.
+  </summary>
+</histogram>
+
+<histogram name="FileBrowser.SuggestApps.Load" enum="SuggestAppsDialogLoad">
+  <summary>
+    Chrome OS File Browser: whether the initialization of the dialog succeeded
+    or not.
+  </summary>
+</histogram>
+
+<histogram name="FileBrowser.SuggestApps.LoadTime" units="milliseconds">
+  <summary>
+    Chrome OS File Browser: time to load the suggest apps dialog. Measured
+    between the moment window appears and the moment all the contants in the
+    dialog including the Chrome Webstore widget are ready.
+  </summary>
+</histogram>
+
 <histogram name="FileBrowser.ViewingFileType" enum="ViewFileType">
   <summary>
     File types that were tried to be viewed through browser. This is recorded
@@ -27742,6 +27772,25 @@ other types of suffix sets.
   <int value="2" label="Reset migration"/>
 </enum>
 
+<enum name="SuggestAppsDialogCloseReason" type="int">
+  <int value="0" label="Unknown error"/>
+  <int value="1" label="Item installed"/>
+  <int value="2" label="User cancelled"/>
+  <int value="3" label="Webstore link clicked"/>
+</enum>
+
+<enum name="SuggestAppsDialogInstall" type="int">
+  <int value="0" label="Install succeeded"/>
+  <int value="1" label="Install cancelled"/>
+  <int value="2" label="Install failed"/>
+</enum>
+
+<enum name="SuggestAppsDialogLoad" type="int">
+  <int value="0" label="Load succeeded"/>
+  <int value="1" label="Load cancelled"/>
+  <int value="2" label="Load failed"/>
+</enum>
+
 <enum name="SuspendStatus" type="int">
   <int value="0" label="Success"/>
   <int value="1" label="Failure"/>