Add UMA reporting on failure to load ppapi plugins.

content/ppapi_plugin/ppapi_thread.cc

Index: content/ppapi_plugin/ppapi_thread.cc
diff --git a/content/ppapi_plugin/ppapi_thread.cc b/content/ppapi_plugin/ppapi_thread.cc
index 0f718af44edd5edda20a78326bc4208c91d785ab..1856cc88706b8c8183f5c924edad5d9e1011e489 100644
--- a/content/ppapi_plugin/ppapi_thread.cc
+++ b/content/ppapi_plugin/ppapi_thread.cc
@@ -259,6 +259,7 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
     if (!library.is_valid()) {
       LOG(ERROR) << "Failed to load Pepper module from "
         << path.value() << " (error: " << error << ")";
+      ReportPluginLoadStatus(path, ContentPluginClient::LOAD_FAILED);
       return;
     }
 
@@ -268,6 +269,7 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
             library.GetFunctionPointer("PPP_GetInterface"));
     if (!plugin_entry_points_.get_interface) {
       LOG(WARNING) << "No PPP_GetInterface in plugin library";
+      ReportPluginLoadStatus(path, ContentPluginClient::ENTRY_POINT_MISSING);
       return;
     }
 
@@ -286,6 +288,7 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
               library.GetFunctionPointer("PPP_InitializeModule"));
       if (!plugin_entry_points_.initialize_module) {
         LOG(WARNING) << "No PPP_InitializeModule in plugin library";
+        ReportPluginLoadStatus(path, ContentPluginClient::ENTRY_POINT_MISSING);
         return;
       }
     }
@@ -348,11 +351,13 @@ void PpapiThread::OnLoadPlugin(const base::FilePath& path,
         &ppapi::proxy::PluginDispatcher::GetBrowserInterface);
     if (init_error != PP_OK) {
       LOG(WARNING) << "InitModule failed with error " << init_error;
+      ReportPluginLoadStatus(path, ContentPluginClient::INIT_FAILED);
       return;
     }
   }
 
   // Initialization succeeded, so keep the plugin DLL loaded.
+  ReportPluginLoadStatus(path, ContentPluginClient::LOAD_SUCCESS);
   library_.Reset(library.Release());
 }
 
@@ -459,7 +464,7 @@ void PpapiThread::SavePluginName(const base::FilePath& path) {
   ppapi::proxy::PluginGlobals::Get()->set_plugin_name(
       path.BaseName().AsUTF8Unsafe());
 
-  // plugin() is NULL when in-process.  Which is fine, because this is
+  // plugin() is NULL when in-process, which is fine, because this is
   // just a hook for setting the process name.
   if (GetContentClient()->plugin()) {
     GetContentClient()->plugin()->PluginProcessStarted(
@@ -467,4 +472,13 @@ void PpapiThread::SavePluginName(const base::FilePath& path) {
   }
 }
 
+void PpapiThread::ReportPluginLoadStatus(
+    const base::FilePath& path,
+    ContentPluginClient::PluginLoadStatus status) {
+  // plugin() is NULL when in-process, which is fine, because we only care
+  // about loading status for out-of-process plugins.
+  if (GetContentClient()->plugin())
+    GetContentClient()->plugin()->PluginLoaded(path, status);
+}
+
 }  // namespace content