Keeps the histograms in sync with the IME extension code.

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 4d36619ab5c661fca1ebe7526473152b376d5933..02c2b62acc5441c73c7a22744113d4216f515486 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -11745,6 +11745,16 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="InputMethod.Commit.Type" enum="IMECommitType">
+  <obsolete>
+    Deprecated 03/2015, and replaced by InputMethod.Commit.Type2.
+  </obsolete>
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The suggestion accuracy type which the user chooses to commit.
+  </summary>
+</histogram>
+
+<histogram name="InputMethod.Commit.Type2" enum="IMECommitType2">
   <owner>shuchen@chromium.org</owner>
   <summary>
     The suggestion accuracy type which the user chooses to commit.
@@ -11777,7 +11787,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
-<histogram name="InputMethod.PkCommit.Type" enum="IMECommitType">
+<histogram name="InputMethod.PkCommit.Type" enum="IMECommitType2">
   <owner>shuchen@chromium.org</owner>
   <summary>
     The suggestion accuracy type which the user chooses to commit for physical
@@ -51603,6 +51613,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </enum>
 
 <enum name="IMECommitType" type="int">
+  <obsolete>
+    Deprecated 03/2015, and replaced by IMECommitType2.
+  </obsolete>
   <int value="0" label="X -&gt; X(0)">
     Types X, commits X as the top suggestion.
   </int>
@@ -51621,6 +51634,32 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </int>
 </enum>
 
+<enum name="IMECommitType2" type="int">
+  <int value="0" label="X -&gt; X(0)">
+    Types X, commits X as the top suggestion.
+  </int>
+  <int value="1" label="X -&gt; Y(0)">
+    Types X, commits Y as the top suggestion.
+  </int>
+  <int value="2" label="X -&gt; X(1)">
+    Types X, commits X as the 2nd suggestion.
+  </int>
+  <int value="3" label="X -&gt; Y(1)">
+    Types X, commits Y as the 2nd suggestion.
+  </int>
+  <int value="4" label="X -&gt; X(2)">
+    Types X, commits X as the 3rd/other suggestion.
+  </int>
+  <int value="5" label="X -&gt; Y(2)">
+    Types X, commits Y as the 3rd/other suggestion.
+  </int>
+  <int value="6" label="Prediction">Commits a prediction suggestion.</int>
+  <int value="7" label="Revert">
+    Reverts the previous auto-corrected and committed word.
+  </int>
+  <int value="8" label="Voice">The commit is triggered by voice input.</int>
+</enum>
+
 <enum name="IMECorrectionLevel" type="int">
   <int value="0" label="Off"/>
   <int value="1" label="Modest"/>