[PPAPI][MediaStream] Rename AudioFrame to AudioBuffer

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 7e64e5b0cf6a4cd441e228a1df92875a80100d06..48cb5c5c19ea03781a3dd2af440df4a6ef88b73e 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -29453,6 +29453,7 @@ other types of suffix sets.
   <int value="612625164" label="PPB_InputEvent;1.0"/>
   <int value="615811055" label="PPB_Flash_MessageLoop;0.1"/>
   <int value="629092173" label="PPB_VideoCapture(Dev);0.3"/>
+  <int value="630100238" label="PPB_AudioBuffer;0.1"/>
   <int value="631212065" label="PPB_MouseInputEvent;1.0"/>
   <int value="632306545" label="PPB_FileRef;1.0"/>
   <int value="656561383" label="PPB_FlashFullscreen;1.0"/>
@@ -29476,7 +29477,6 @@ other types of suffix sets.
   <int value="890225106" label="PPB_FileChooserTrusted;0.6"/>
   <int value="893629850" label="PPB_VarArrayBuffer;1.0"/>
   <int value="897332014" label="PPB_Zoom(Dev);0.2"/>
-  <int value="910782902" label="PPB_AudioFrame;0.1"/>
   <int value="913922409" label="PPB_NetworkProxy;1.0"/>
   <int value="916446405" label="PPB_URLUtil(Dev);0.6"/>
   <int value="930786862" label="PPB_Flash_Clipboard;5.0"/>