Rename *FileIO TaskScheduler worker pools to *Blocking.

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 cd2e72560bd7013cc8e4bde3f90e5f8d660c3b73..eef7925e3d2fc8ae886c537bc4c95c90cbd2d8f0 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -119901,12 +119901,32 @@ value.
 </histogram_suffixes>
 
 <histogram_suffixes name="TaskSchedulerWorkerPool" separator=".">
+  <suffix name="BackgroundBlockingPool"
+      label="Applies to the BackgroundBlocking worker pool."/>
   <suffix name="BackgroundFileIOPool"
-      label="Applies to the BackgroundFileIO worker pool."/>
+      label="Applies to the BackgroundFileIO worker pool.">
+    <obsolete>
+      Deprecated 02/2017. Pool was renamed to BackgroundBlocking.
+    </obsolete>
+  </suffix>
   <suffix name="BackgroundPool" label="Applies to the Background worker pool."/>
+  <suffix name="ForegroundBlockingPool"
+      label="Applies to the ForegroundBlocking worker pool."/>
   <suffix name="ForegroundFileIOPool"
-      label="Applies to the ForegroundFileIO worker pool."/>
+      label="Applies to the ForegroundFileIO worker pool.">
+    <obsolete>
+      Deprecated 02/2017. Pool was renamed to ForegroundBlocking.
+    </obsolete>
+  </suffix>
   <suffix name="ForegroundPool" label="Applies to the Foreground worker pool."/>
+  <suffix name="RendererBackgroundBlockingPool"
+      label="Applies to the RendererBackgroundBlocking worker pool."/>
+  <suffix name="RendererBackgroundPool"
+      label="Applies to the RendererBackground worker pool."/>
+  <suffix name="RendererForegroundBlockingPool"
+      label="Applies to the RendererForegroundBlocking worker pool."/>
+  <suffix name="RendererForegroundPool"
+      label="Applies to the RendererForeground worker pool."/>
   <affected-histogram name="TaskScheduler.DetachDuration"/>
   <affected-histogram name="TaskScheduler.NumTasksBeforeDetach"/>
   <affected-histogram name="TaskScheduler.NumTasksBetweenWaits"/>