Updates the histograms for IMF and IMEs according to the new 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 24817c5c580c28af1f7d487adf04e43b564bf812..af4be4fbf4d35f2c987574283b4469f09c542ac8 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -9707,6 +9707,42 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <summary>The type of Vary header for a given GET response.</summary>
 </histogram>
 
+<histogram name="IME.Commit.Index">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The suggestion index of the suggestion list which user chooses to commit.
+  </summary>
+</histogram>
+
+<histogram name="IME.Commit.Type" enum="IMECommitType">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The suggestion accuracy type which user chooses to commit. 0: User types X,
+    and chooses X as top suggestion. 1: User types X, and chooses Y as top
+    suggestion. 2: User types X, and chooses X as non-top suggestion. 3: User
+    types X, and chooses Y as non-top suggestion. 4: User chooses a prediction
+    suggestion. 5: User reverts the committed text.
+  </summary>
+</histogram>
+
+<histogram name="IME.VK.InitLatency">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The on-screen keyboard initialization latency levels. Each level costs
+    250ms. For example, level 0 is 0 ~ 250ms; level 1 is 251 ~ 500ms; etc.
+  </summary>
+</histogram>
+
+<histogram name="IME.VK.Layout" enum="IMEVKLayout">
+  <owner>shuchen@chromium.org</owner>
+  <summary>The usage for active layout of on-screen keyboard.</summary>
+</histogram>
+
+<histogram name="IME.VK.LayoutSwitch">
+  <owner>shuchen@chromium.org</owner>
+  <summary>The count of switching layouts on the on-screen keyboard.</summary>
+</histogram>
+
 <histogram name="Import.ImporterType.AutoImport" enum="ImporterType">
   <owner>gab@chromium.org</owner>
   <summary>The importer used on first run Auto Import.</summary>
@@ -9861,6 +9897,34 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="InputMethod.ActiveCount">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The number of active input methods recorded when user is logged in to CrOS.
+  </summary>
+</histogram>
+
+<histogram name="InputMethod.Category" enum="InputMethodCategory">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The breakdown of input method usage by input method category, which is
+    recorded when user presses keys on physical or on-screen keyboard.
+  </summary>
+</histogram>
+
+<histogram name="InputMethod.CommitLength">
+  <owner>shuchen@chromium.org</owner>
+  <summary>The number of characters committed with composition text.</summary>
+</histogram>
+
+<histogram name="InputMethod.ID">
+  <owner>shuchen@chromium.org</owner>
+  <summary>
+    The breakdown of input method usage by input method IDs, which is recorded
+    when user presses keys on physical or on-screen keyboard.
+  </summary>
+</histogram>
+
 <histogram name="Installer.AttemptsCount.Total" units="count">
   <owner>zeuthen@chromium.org</owner>
   <summary>
@@ -43426,6 +43490,25 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </int>
 </enum>
 
+<enum name="IMECommitType" type="int">
+  <int value="0" label="X -&gt; X(0)"/>
+  <int value="1" label="X -&gt; Y(0)"/>
+  <int value="2" label="X -&gt; X(1)"/>
+  <int value="3" label="X -&gt; Y(1)"/>
+  <int value="4" label="Prediction"/>
+  <int value="5" label="Revert"/>
+</enum>
+
+<enum name="IMEVKLayout" type="int">
+  <int value="0" label="Compact"/>
+  <int value="1" label="CompactSymbol"/>
+  <int value="2" label="CompactMore"/>
+  <int value="3" label="Full"/>
+  <int value="4" label="A11y"/>
+  <int value="5" label="Handwriting"/>
+  <int value="6" label="Emoji"/>
+</enum>
+
 <enum name="ImporterType" type="int">
   <int value="0" label="Unknown"/>
   <int value="1" label="IMPORTER_METRICS_IE">IE (Windows-only)</int>
@@ -43481,6 +43564,15 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="4" label="Script"/>
 </enum>
 
+<enum name="InputMethodCategory" type="int">
+  <int value="0" label="XKB"/>
+  <int value="1" label="ZH"/>
+  <int value="2" label="JA"/>
+  <int value="3" label="KO"/>
+  <int value="4" label="M17N"/>
+  <int value="5" label="T13N"/>
+</enum>
+
 <enum name="InstantControllerEvent" type="int">
   <int value="0" label="URL_ADDED_TO_BLACKLIST"/>
   <int value="1" label="URL_REMOVED_FROM_BLACKLIST"/>
@@ -52716,6 +52808,34 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="PLT.BeginToFinish_NormalLoad"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="IMEAutoCorrect" separator=".">
+  <affected-histogram name="IME.Commit.Index.FR"/>
+  <suffix name="AC0" label="The auto-correct level is 0"/>
+  <suffix name="AC1" label="The auto-correct level is 1"/>
+  <suffix name="AC2" label="The auto-correct level is 2"/>
+  <affected-histogram name="IME.Commit.Index.US"/>
+  <affected-histogram name="IME.Commit.Type.FR"/>
+  <affected-histogram name="IME.Commit.Type.US"/>
+</histogram_suffixes>
+
+<histogram_suffixes name="IMEMajorNames" separator=".">
+  <suffix name="US" label="The US keyboard input method"/>
+  <suffix name="FR" label="The French keyboard input method"/>
+  <suffix name="Pinyin" label="The Chinse Pinyin input method"/>
+  <affected-histogram name="IME.Commit.Index"/>
+  <affected-histogram name="IME.Commit.Type"/>
+</histogram_suffixes>
+
+<histogram_suffixes name="IMEVKLatency" separator=".">
+  <suffix name="BackgroundSettingsFetched" label="BackgroundSettingsFetched"/>
+  <suffix name="HtmlLoaded" label="HtmlLoaded"/>
+  <suffix name="KeyboardCreated" label="KeyboardCreated"/>
+  <suffix name="KeyboardShown" label="KeyboardShown"/>
+  <suffix name="KeysetLoaded" label="KeyboardLoaded"/>
+  <suffix name="LayoutLoaded" label="LayoutLoaded"/>
+  <affected-histogram name="IME.VK.InitLatency"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="IndexedDBLevelDBErrnoMethods" separator=".">
   <suffix name="NewLogger" label="ChromiumEnv::NewLogger"/>
   <suffix name="NewSequentialFile" label="ChromiumEnv::NewSequentialFile"/>