Increase number of buckets for intent-to-first-commit histogram

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 0f9e7c8c3ee7b825d069310ad609f21828a5066d..c38d839599ed3e0c43a57e9ee4192fcb9c4dedd7 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -5780,6 +5780,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 
 <histogram name="ChromeGeneratedCustomTab.IntentToFirstCommitNavigationTime"
     units="ms">
+  <obsolete>
+    Deprecated 10/2016 in favor of .IntentToFirstCommitNavigationTime2.*.
+  </obsolete>
   <owner>lizeb@chromium.org</owner>
   <summary>
     Time between the intent arrival in a Chrome generated CCT and the first
@@ -5788,11 +5791,22 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="ChromeGeneratedCustomTab.IntentToFirstCommitNavigationTime2"
+    units="ms">
+  <owner>lizeb@chromium.org</owner>
+  <summary>
+    In &quot;Herb&quot; mode shows the time between the intent arrival in a
+    Chrome generated CCT and the first navigation commit, if the navigation is
+    successful. Similar in principle to Startup.FirstCommitNavigationTime.
+  </summary>
+</histogram>
+
 <histogram name="ChromeGeneratedCustomTab.IntentToPageLoadedTime" units="ms">
   <owner>lizeb@chromium.org</owner>
   <summary>
-    Time between the intent arrival in a Chrome generated CCT and the first
-    &quot;page loaded&quot; event, if the navigation is successful.
+    In &quot;Herb&quot; mode shows time between the intent arrival in a Chrome
+    generated CCT and the first &quot;page loaded&quot; event, if the navigation
+    is successful.
   </summary>
 </histogram>
 
@@ -7934,6 +7948,9 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
 </histogram>
 
 <histogram name="CustomTabs.IntentToFirstCommitNavigationTime" units="ms">
+  <obsolete>
+    Deprecated 10/2016 in favor of .IntentToFirstCommitNavigationTime2.*.
+  </obsolete>
   <owner>lizeb@chromium.org</owner>
   <summary>
     Time between the intent arrival in Chrome and the first navigation commit,
@@ -7942,11 +7959,21 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="CustomTabs.IntentToFirstCommitNavigationTime2" units="ms">
+  <owner>lizeb@chromium.org</owner>
+  <summary>
+    Time between the intent arrival to a Custom Tab and the first navigation
+    commit, if the navigation is successful. Similar in principle to
+    Startup.FirstCommitNavigationTime. Non-&quot;Herb&quot; mode.
+  </summary>
+</histogram>
+
 <histogram name="CustomTabs.IntentToPageLoadedTime" units="ms">
   <owner>lizeb@chromium.org</owner>
   <summary>
     Time between the intent arrival in Chrome and the first &quot;page
-    loaded&quot; event, if the navigation is successful.
+    loaded&quot; event, if the navigation is successful. Non-&quot;Herb&quot;
+    mode.
   </summary>
 </histogram>
 
@@ -105565,6 +105592,17 @@ value.
   <affected-histogram name="PLT.PT_StartToFinish"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="IntentToFirstCommitZoom" separator=".">
+  <owner>lizeb@chromium.org</owner>
+  <owner>pasko@chromium.org</owner>
+  <suffix name="ZoomedIn" label="Zoomed in view: shorter range, more buckets."/>
+  <suffix name="ZoomedOut"
+      label="Zoomed out view: longer time range, less buckets."/>
+  <affected-histogram
+      name="ChromeGeneratedCustomTab.IntentToFirstCommitNavigationTime2"/>
+  <affected-histogram name="CustomTabs.IntentToFirstCommitNavigationTime2"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="InterProcessTimeTicksConversionType">
   <owner>ppi@chromium.org</owner>
   <suffix name="BrowserToRenderer"/>