Pepper: Log in UMA when an interface is used.

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 995739a50900de13778ecbbc5c7905763b52ebc9..bde5aa0689bee71fc8dd0f2d99c3cba8f4c0e1e9 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -12787,6 +12787,13 @@ other types of suffix sets.
   </summary>
 </histogram>
 
+<histogram name="Pepper.InterfaceUsed" enum="PepperInterface">
+  <summary>
+    The number of out-of-process plugin processes that have loaded a particular
+    PPB interface version.
+  </summary>
+</histogram>
+
 <histogram name="PerformanceMonitor.AverageCPU" units="PercentCPUUsage">
   <summary>
     Average CPU utilization of a process, read out at each two-minute interval.
@@ -29195,6 +29202,154 @@ other types of suffix sets.
   <int value="2" label="Match"/>
 </enum>
 
+<enum name="PepperInterface" type="int">
+<!-- Generated by ppapi/tools/pepper_hash_for_uma.cc -->
+
+  <int value="286711" label="PPB_FlashFullscreen;0.1"/>
+  <int value="2804066" label="PPB_AudioConfig;1.1"/>
+  <int value="8760108" label="PPB_Testing_Private;1.0"/>
+  <int value="13662160" label="PPB_CharSet(Dev);0.4"/>
+  <int value="22816901" label="PPB_FileChooser(Dev);0.5"/>
+  <int value="28187368" label="PPB_IMEInputEvent(Dev);0.2"/>
+  <int value="37307420" label="PPB_Scrollbar(Dev);0.5"/>
+  <int value="62905097" label="PPB_TrueTypeFont(Dev);0.1"/>
+  <int value="79708274" label="PPB_TCPSocket;1.1"/>
+  <int value="110360074" label="PPB_Var;1.1"/>
+  <int value="138418890" label="PPB_Memory(Dev);0.1"/>
+  <int value="153443470" label="PPB_URLResponseInfo;1.0"/>
+  <int value="153532707" label="PPB_Buffer(Dev);0.4"/>
+  <int value="162107265" label="PPB_NetworkMonitor;1.0"/>
+  <int value="180906214" label="PPB_Instance_Private;0.1"/>
+  <int value="221802429" label="PPB_URLUtil(Dev);0.7"/>
+  <int value="226206264" label="PPB_FileRef;1.1"/>
+  <int value="229560990" label="PPB_Var(Deprecated);0.3"/>
+  <int value="250764663" label="PPB_Graphics2D(Dev);0.2"/>
+  <int value="320267009" label="PPB_Flash_File_ModuleLocal;3"/>
+  <int value="348907389" label="PPB_TCPSocket_Private;0.4"/>
+  <int value="382780521" label="PPB_FileRef;1.2"/>
+  <int value="415548516" label="PPB_MessageLoop;1.0"/>
+  <int value="434146763" label="PPB_BrowserFont_Trusted;1.0"/>
+  <int value="495324603" label="PPB_Widget(Dev);0.4"/>
+  <int value="556941117" label="PPB_IMEInputEvent;1.0"/>
+  <int value="588532407" label="PPB_Graphics2D;1.1"/>
+  <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="631212065" label="PPB_MouseInputEvent;1.0"/>
+  <int value="632306545" label="PPB_FileRef;1.0"/>
+  <int value="656561383" label="PPB_FlashFullscreen;1.0"/>
+  <int value="657117235" label="PPB_Flash_DRM;1.0"/>
+  <int value="668624105" label="PPB_Flash_DeviceID;1.0"/>
+  <int value="714324031" label="PPB_Graphics3D;1.0"/>
+  <int value="724664149" label="PPB_Flash_Menu;0.2"/>
+  <int value="760024173" label="PPB_FileIO;1.0"/>
+  <int value="763746388" label="PPB_NaCl_Private;1.0"/>
+  <int value="772423590" label="PPB_TouchInputEvent;1.0"/>
+  <int value="780912189" label="PPB_Alarms(Dev);0.1"/>
+  <int value="795366801" label="PPB_Trace_Event(Dev);0.2"/>
+  <int value="804011173" label="PPB_Gamepad;1.0"/>
+  <int value="810111568" label="PPB_Messaging;1.0"/>
+  <int value="829878300" label="PPB_TCPSocket;1.0"/>
+  <int value="835840137" label="PPB_WebSocket;1.0"/>
+  <int value="844787073" label="PPB_TextInput(Dev);0.2"/>
+  <int value="856177441" label="PPB_VarArray;1.0"/>
+  <int value="857934187" label="PPB_Ext_Socket(Dev);0.1"/>
+  <int value="883046945" label="PPB_OpenGLES2ChromiumMapSub;1.0"/>
+  <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"/>
+  <int value="941275733" label="PPB_Flash;12.6"/>
+  <int value="944161065" label="PPB_Flash_DRM;1.1"/>
+  <int value="946515854" label="PPB_View(Dev);0.1"/>
+  <int value="948969343" label="PPB_OpenGLES2;1.0"/>
+  <int value="961317980" label="PPB_Fullscreen;1.0"/>
+  <int value="964595048" label="PPB_BrokerTrusted;0.2"/>
+  <int value="965548627" label="PPB_Audio;1.1"/>
+  <int value="972914533" label="PPB_TextInputController;1.0"/>
+  <int value="997459960" label="PPB_FileChooserTrusted;0.5"/>
+  <int value="1008493701" label="PPB_UDPSocket;1.0"/>
+  <int value="1017579801" label="PPB_OpenGLES2FramebufferBlit;1.0"/>
+  <int value="1032125598" label="PPB_HostResolver;1.0"/>
+  <int value="1039206341" label="PPB_UDPSocket_Private;0.2"/>
+  <int value="1042058362" label="PPB_Core;1.0"/>
+  <int value="1050892821" label="PPB_OpenGLES2InstancedArrays;1.0"/>
+  <int value="1055791466" label="PPB_CursorControl(Dev);0.4"/>
+  <int value="1065040273" label="PPB_KeyboardInputEvent;1.2"/>
+  <int value="1086644401" label="PPB_Proxy_Private;6"/>
+  <int value="1094761313" label="PPB_URLLoaderTrusted;0.3"/>
+  <int value="1099975614" label="PPB_Flash;12.5"/>
+  <int value="1111997633" label="PPB_AudioInput(Dev);0.4"/>
+  <int value="1155638369" label="PPB_WheelInputEvent;1.0"/>
+  <int value="1161845861" label="PPB_NetAddress_Private;1.0"/>
+  <int value="1173327824" label="PPB_OpenGLES2ChromiumEnableFeature;1.0"/>
+  <int value="1188712923" label="PPB_Talk_Private;2.0"/>
+  <int value="1218354710" label="PPB_VideoFrame;0.1"/>
+  <int value="1260990020" label="PPB_Ext_Socket(Dev);0.2"/>
+  <int value="1262240942" label="PPB_FileIO;1.1"/>
+  <int value="1272679676" label="PPB_TCPSocket_Private;0.5"/>
+  <int value="1316246754" label="PPB_KeyboardInputEvent;1.0"/>
+  <int value="1316320941" label="PPB_Graphics2D(Dev);0.1"/>
+  <int value="1321620067" label="PPB_Instance;1.0"/>
+  <int value="1328369437" label="PPB_Talk_Private;1.0"/>
+  <int value="1337084425" label="PPB_View;1.0"/>
+  <int value="1354526686" label="PPB_FileIO_Private;0.1"/>
+  <int value="1357207230" label="PPB_DeviceRef(Dev);0.1"/>
+  <int value="1358195444" label="PPB_CharSet_Trusted;1.0"/>
+  <int value="1360443600" label="PPB_OpenGLES2FramebufferMultisample;1.0"/>
+  <int value="1374404330" label="PPB_BrokerTrusted;0.3"/>
+  <int value="1374976378" label="PPB_OpenGLES2Query;1.0"/>
+  <int value="1437724812" label="PPB_AudioConfig;1.0"/>
+  <int value="1443771913" label="PPB_NetAddress;1.0"/>
+  <int value="1465557812" label="PPB_VarResource(Dev);0.1"/>
+  <int value="1504691399" label="PPB_Flash;13.0"/>
+  <int value="1505595424" label="PPB_Crypto(Dev);0.1"/>
+  <int value="1508192415" label="PPB_VarDictionary;1.0"/>
+  <int value="1519132417" label="PPB_FileSystem;1.0"/>
+  <int value="1520420939" label="PPB_MouseCursor;1.0"/>
+  <int value="1528832860" label="PPB_FileChooser(Dev);0.6"/>
+  <int value="1641037564" label="PPB_VideoSource_Private;0.1"/>
+  <int value="1645591549" label="PPB_Widget(Dev);0.3"/>
+  <int value="1677958987" label="PPB_ImageData;1.0"/>
+  <int value="1680873803" label="PPB_Console;1.0"/>
+  <int value="1703245231" label="PPB_NetworkList;1.0"/>
+  <int value="1721408268" label="PPB_URLLoader;1.0"/>
+  <int value="1753813390" label="PPB_Flash_Clipboard;4.0"/>
+  <int value="1773992510" label="PPB_PDF;1"/>
+  <int value="1775059283" label="PPB_Flash_FontFile;0.1"/>
+  <int value="1779899536" label="PPB_Flash_Print;1.0"/>
+  <int value="1821321578" label="PPB_UMA_Private;0.2"/>
+  <int value="1822250569" label="PPB_Trace_Event(Dev);0.1"/>
+  <int value="1838344955" label="PPB_Flash;12.4"/>
+  <int value="1866591098" label="PPB_FileRefPrivate;0.1"/>
+  <int value="1870131254" label="PPB_MouseLock;1.0"/>
+  <int value="1930785273" label="PPB_Var;1.0"/>
+  <int value="1944731926" label="PPB_URLRequestInfo;1.0"/>
+  <int value="1978180250" label="PPB_Flash_Clipboard;5.1"/>
+  <int value="1980463089" label="PPB_View;1.1"/>
+  <int value="1981643755" label="PPB_FileMapping;0.1"/>
+  <int value="1994108724" label="PPB_Flash_File_FileRef;2"/>
+  <int value="1998274350" label="PPB_Font(Dev);0.6"/>
+  <int value="2003778556" label="PPB_MouseInputEvent;1.1"/>
+  <int value="2005291722" label="PPB_NetAddress_Private;1.1"/>
+  <int value="2012645499" label="PPB_Find(Dev);0.3"/>
+  <int value="2019398562" label="PPB_TCPSocket_Private;0.3"/>
+  <int value="2023751176" label="PPB_Printing(Dev);0.7"/>
+  <int value="2024537413" label="PPB_Graphics2D;1.0"/>
+  <int value="2026777995" label="PPB_VideoDecoder(Dev);0.16"/>
+  <int value="2027770764" label="PPB_UDPSocket_Private;0.3"/>
+  <int value="2031327332" label="PPB_TextInput(Dev);0.1"/>
+  <int value="2056532375" label="PPB_Audio;1.0"/>
+  <int value="2062775054" label="PPB_IMEInputEvent(Dev);0.1"/>
+  <int value="2070630224" label="PPB_AudioInput(Dev);0.3"/>
+  <int value="2095945999" label="PPB_NetAddress_Private;0.1"/>
+  <int value="2123225074" label="PPB_HostResolver_Private;0.1"/>
+  <int value="2126196629" label="PPB_UDPSocket_Private;0.4"/>
+</enum>
+
 <enum name="PepperVideoDecodeError" type="int">
   <int value="1" label="Illegal state">
     An operation was attempted during an incompatible decoder state.