Add Quickoffice UMA histograms for spreadsheets.

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 11590f9435e09a3598e78911b785ec4a5cec48af..900fc7a87775697cfc4e55fb30ad95adb41c170f 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -12506,6 +12506,13 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Quickoffice.xlsFormattedCellCount">
+  <summary>
+    Records the number of cells that contain formatting data in the default
+    worksheet when a compound binary format spreadsheet is opened.
+  </summary>
+</histogram>
+
 <histogram name="Quickoffice.xlsNonEmptyCellCount">
   <summary>
     Records the number of non-empty cells in the default worksheet when a
@@ -12520,6 +12527,13 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Quickoffice.xlsxFormattedCellCount">
+  <summary>
+    Records the number of cells that contain formatting data in the default
+    worksheet when an OOXML format spreadsheet is opened.
+  </summary>
+</histogram>
+
 <histogram name="Quickoffice.xlsxNonEmptyCellCount">
   <summary>
     Records the number of non-empty cells when an OOXML format spreadsheet is