Fix Me2Me host to properly reload config when it changes.

remoting/host/composite_host_config.cc

Index: remoting/host/composite_host_config.cc
diff --git a/remoting/host/composite_host_config.cc b/remoting/host/composite_host_config.cc
index cf130a9decf7271055cfac4fe7856e0554322a6e..23316ff4e0f634d7633308d14e92e03d9bb19ff8 100644
--- a/remoting/host/composite_host_config.cc
+++ b/remoting/host/composite_host_config.cc
@@ -23,9 +23,18 @@ bool CompositeHostConfig::AddConfigPath(const FilePath& path) {
   return true;
 }
 
+bool CompositeHostConfig::Reload() {
+  bool result = true;
+  for (ScopedVector<JsonHostConfig>::iterator it = configs_.begin();
+       it != configs_.end(); ++it) {
+    result = result && (*it)->Read();
+  }
+  return result;
+}
+
 bool CompositeHostConfig::GetString(const std::string& path,
                                     std::string* out_value) const {
-  for (std::vector<HostConfig*>::const_iterator it = configs_.begin();
+  for (ScopedVector<JsonHostConfig>::const_iterator it = configs_.begin();
        it != configs_.end(); ++it) {
     if ((*it)->GetString(path, out_value))
       return true;
@@ -35,7 +44,7 @@ bool CompositeHostConfig::GetString(const std::string& path,
 
 bool CompositeHostConfig::GetBoolean(const std::string& path,
                                      bool* out_value) const {
-  for (std::vector<HostConfig*>::const_iterator it = configs_.begin();
+  for (ScopedVector<JsonHostConfig>::const_iterator it = configs_.begin();
        it != configs_.end(); ++it) {
     if ((*it)->GetBoolean(path, out_value))
       return true;