Added usage of ScreenContext in EulaScreen.

chrome/browser/chromeos/login/screens/base_screen.cc

Index: chrome/browser/chromeos/login/screens/base_screen.cc
diff --git a/chrome/browser/chromeos/login/screens/base_screen.cc b/chrome/browser/chromeos/login/screens/base_screen.cc
index 82f38861ed19d96d9a7870e0b69cc4ff17a89110..916bb39f9f93ef149b106f147fc3389e5cd97764 100644
--- a/chrome/browser/chromeos/login/screens/base_screen.cc
+++ b/chrome/browser/chromeos/login/screens/base_screen.cc
@@ -40,6 +40,10 @@ std::string BaseScreen::GetID() const {
   return GetName();

[Denis Kuznetsov (DE-MUC), 2014/11/25 17:31:16]

not in scope, but as you touch this file, please add todo here to eliminate
intermediate GetName() once it is possible.

[ygorshenin1, 2014/11/26 11:45:40]

Done.

 }
 
+void BaseScreen::OnContextChanged(const base::DictionaryValue& diff) {
+  context_.ApplyChanges(diff, nullptr);
+}
+
 void BaseScreen::Finish(BaseScreenDelegate::ExitCodes exit_code) {
   base_screen_delegate_->OnExit(*this, exit_code, &context_);
 }
@@ -51,8 +55,4 @@ void BaseScreen::OnButtonPressed(const std::string& button_id) {
   LOG(WARNING) << "BaseScreen::OnButtonPressed(): button_id=" << button_id;
 }
 
-void BaseScreen::OnContextChanged(const base::DictionaryValue* diff) {
-  LOG(WARNING) << "BaseScreen::OnContextChanged()";
-}
-
 }  // namespace chromeos