Add DBusStatistics and DBusLogSource to log and show dbus stats

dbus/object_proxy.cc

Index: dbus/object_proxy.cc
diff --git a/dbus/object_proxy.cc b/dbus/object_proxy.cc
index c8f00d7cbc35bd200900fb8b93f55b2a96eae115..79ab5046c95b2110f111326e9a20438f21391fbc 100644
--- a/dbus/object_proxy.cc
+++ b/dbus/object_proxy.cc
@@ -12,6 +12,7 @@
 #include "base/stringprintf.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_restrictions.h"
+#include "dbus/dbus_statistics.h"
 #include "dbus/message.h"
 #include "dbus/object_path.h"
 #include "dbus/object_proxy.h"
@@ -83,6 +84,9 @@ Response* ObjectProxy::CallMethodAndBlock(MethodCall* method_call,
   UMA_HISTOGRAM_ENUMERATION("DBus.SyncMethodCallSuccess",
                             response_message ? 1 : 0,
                             kSuccessRatioHistogramMaxValue);
+  DbusStatistics::AddSentCall(service_name_,

[satorux1, 2012/11/12 00:40:43]

This is a synchronous method call. We might want to distinguish sync and async
just like we do for the UMA histogram.

[stevenjb, 2012/11/12 19:46:40]

That's makes sense. Done.

+                              method_call->GetInterface(),
+                              method_call->GetMember());
 
   if (!response_message) {
     LogMethodCallFailure(method_call->GetInterface(),
@@ -144,6 +148,10 @@ void ObjectProxy::CallMethodWithErrorCallback(MethodCall* method_call,
                                   callback,
                                   error_callback,
                                   start_time);
+  DbusStatistics::AddSentCall(service_name_,
+                              method_call->GetInterface(),
+                              method_call->GetMember());
+
   // Wait for the response in the D-Bus thread.
   bus_->PostTaskToDBusThread(FROM_HERE, task);
 }
@@ -438,6 +446,8 @@ DBusHandlerResult ObjectProxy::HandleMessage(
   const std::string interface = signal->GetInterface();
   const std::string member = signal->GetMember();
 
+  DbusStatistics::AddReceivedCall(service_name_, interface, member);
+
   // Check if we know about the signal.
   const std::string absolute_signal_name = GetAbsoluteSignalName(
       interface, member);