Upstream changes for android signin promo

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 59a6a1d393cc10f35cfddde79e6f9b16d858dc04..9576740028dfa47061e22ef87b8601128e72471e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -29348,6 +29348,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Signin.AndroidSigninPromo" enum="AndroidSigninPromoAction">

[Alexei Svitkine (slow), 2014/09/12 18:11:20]

I'm confused - where's the code for this histogram?

Is it in another CL?

+  <owner>guohui@chromium.org</owner>
+  <summary>Track how a user interfacts with the android signin promo.</summary>
+</histogram>
+
 <histogram name="Signin.DuringFirstRun">
   <owner>mlerman@chromium.org</owner>
   <summary>
@@ -37686,6 +37691,23 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="3" label="LowMemory"/>
 </enum>
 
+<enum name="AndroidSigninPromoAction" type="int">
+  <int value="0" label="Promo enabled">
+    The Android signin promo was enabled to show on next startup.
+  </int>
+  <int value="1" label="Promo shown">The Android signin promo was shown.</int>
+  <int value="2" label="Promo declined">
+    User declined the Android signin promo.
+  </int>
+  <int value="3" label="Promo accepted">
+    User completed signin through the Android signin promo flow successfully.
+  </int>
+  <int value="4" label="Promo accepted with advanced settings">
+    User completed signin through the Android signin promo flow successfully and
+    chose to configure sync settings.
+  </int>
+</enum>
+
 <enum name="AndroidTabCloseUndoToastEvent" type="int">
   <int value="0" label="Undo Shown (Cold)"/>
   <int value="1" label="Undo Shown (Warm)"/>