Instant Apps: Split latency recordings into two.

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 62c540657e8b5368ab6a2c2a4e4eb53b41ce0fd9..a69100e6f6abcfa47e2f661877cb7f081ddaa511 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -498,6 +498,22 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Android.InstantApps.ApiCallDurationWithApp" units="ms">
+  <owner>mariakhomenko@chromium.org</owner>
+  <summary>
+    Measures the amount of time spent in the getInstantAppIntent() API call when
+    the API was able to find an Instant App for the URL.
+  </summary>
+</histogram>
+
+<histogram name="Android.InstantApps.ApiCallDurationWithoutApp" units="ms">
+  <owner>mariakhomenko@chromium.org</owner>
+  <summary>
+    Measures the amount of time spent in the getInstantAppIntent() API call when
+    the API was not able to find an Instant App for the URL.
+  </summary>
+</histogram>
+
 <histogram name="Android.InstantApps.FallbackDuration" units="ms">
   <owner>mariakhomenko@chromium.org</owner>
   <summary>