Compile-time and run-time flags for top chrome material design.

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 e82f3e285435ab08b830d10d5515aafb7325bc44..49eb7007010aacd48890111ebac72d9ac81145ad 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -56986,6 +56986,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="-1998927516" label="enable-md-settings"/>
   <int value="-1985025593" label="file-manager-enable-new-gallery"/>
   <int value="-1972383451" label="disable-pinch"/>
+  <int value="-1963402827" label="enable-topchrome-md"/>
   <int value="-1943507605" label="enable-new-video-renderer"/>
   <int value="-1941852572" label="floating-virtual-keyboard"/>
   <int value="-1940806558" label="enable-syncfs-directory-operation"/>
@@ -56997,6 +56998,7 @@ To add a new entry, add it with any value and run test to compute valid value.
   <int value="-1888273969" label="tab-capture-upscale-quality"/>
   <int value="-1887053262"
       label="enable-zero-suggest-most-visited-without-serp"/>
+  <int value="-1880355454" label="disable-topchrome-md"/>
   <int value="-1876881908"
       label="disable-infobar-for-protected-media-identifier"/>
   <int value="-1874908826" label="enable-instant-search-clicks"/>