Add native log and uma stat when all input shared memory buffers are full

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 4a5c9eb7cee894bfa3697c236d4ee9efd62057ad..46c6b6d7db9f4247f9ee11de437d52d2c23bea07 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -10922,7 +10922,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 
 <histogram name="Media.AudioInputControllerCaptureStartupSuccess"
     enum="CaptureStartupResult">
-  <owner>dalecurtis@chromium.org</owner>
+  <owner>xians@chromium.org</owner>
   <summary>
     Whether capture started successfully after an input stream startup was
     requested.
@@ -10940,6 +10940,14 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <summary>Measures the time taken for AudioInputDeviceManager::</summary>
 </histogram>
 
+<histogram name="Media.AudioInputSyncWriterBuffersAreFull"
+    enum="AudioInputBufferType">
+  <owner>xians@chromium.org</owner>
+  <summary>
+    Counters for AudioInputSyncWriter::Write() where all the buffers are full.
+  </summary>
+</histogram>
+
 <histogram name="Media.AudioOutputController" units="ms">
   <owner>dalecurtis@chromium.org</owner>
   <summary>Measures the time taken for AudioOutputController::</summary>
@@ -37561,6 +37569,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="8" label="k1920"/>
 </enum>
 
+<enum name="AudioInputBufferType" type="int">
+  <int value="0" label="single buffer"/>
+  <int value="1" label="circular buffer"/>
+</enum>
+
 <enum name="AudioInputSilenceReport" type="int">
   <int value="0" label="No measurement"/>
   <int value="1" label="Only audio"/>