[ChromeDriver] Subscribe PerformanceLogger to CommandListener interface

chrome/test/chromedriver/util.cc

Index: chrome/test/chromedriver/util.cc
diff --git a/chrome/test/chromedriver/util.cc b/chrome/test/chromedriver/util.cc
index e91689d45dcc257d5224f2e3f9876bfe64a05a1c..7671cc7670c56df63a4c43c262792571ce3d42b2 100644
--- a/chrome/test/chromedriver/util.cc
+++ b/chrome/test/chromedriver/util.cc
@@ -9,6 +9,7 @@
 #include "base/files/file_enumerator.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/format_macros.h"
+#include "base/memory/scoped_vector.h"
 #include "base/rand_util.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
@@ -18,7 +19,9 @@
 #include "chrome/test/chromedriver/chrome/status.h"
 #include "chrome/test/chromedriver/chrome/ui_events.h"
 #include "chrome/test/chromedriver/chrome/web_view.h"
+#include "chrome/test/chromedriver/command_listener.h"
 #include "chrome/test/chromedriver/key_converter.h"
+#include "chrome/test/chromedriver/session.h"
 #include "third_party/zlib/google/zip.h"
 
 std::string GenerateId() {
@@ -401,3 +404,15 @@ Status UnzipSoleFile(const base::FilePath& unzip_dir,
   *file = first_file;
   return Status(kOk);
 }
+
+void NotifySessionListenersBeforeCommand(Session* session,
+                                         const std::string& command_name) {
+  for (ScopedVector<CommandListener>::const_iterator it =
+       session->command_listeners.begin();
+       it != session->command_listeners.end();
+       ++it) {
+    Status status = (*it)->BeforeCommand(command_name);
+    if (status.IsError())
+      LOG(ERROR) << "Error when notifying listener of command";
+  }
+}