Added 'contextReady' message for HostPairingScreen.

chrome/browser/chromeos/login/screens/screen_context.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_CONTEXT_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_CONTEXT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 66 matching lines @@
   // Stores all changes since the last call to the
   // GetChangesAndReset() in |diff|.  All previous contents of |diff|
   // will be thrown away.
   void GetChangesAndReset(base::DictionaryValue* diff);
 
   // Applies changes from |diff| to the context. All keys from |diff|
   // are stored in |keys|. |keys| argument is optional and can be NULL.
   void ApplyChanges(const base::DictionaryValue& diff,
                     std::vector<std::string>* keys);
 
+  // Returns underlying dictionary containing all the stored data.
+  const base::DictionaryValue& storage() const { return storage_; }
+
  private:
   bool Set(const KeyType& key, base::Value* value);
 
   template <typename T>
   T Get(const KeyType& key) const {
     DCHECK(CalledOnValidThread());
     const base::Value* value;
     bool has_key = storage_.Get(key, &value);
     DCHECK(has_key);
     T result;
@@ skipping 17 matching lines @@
 
   // Contains all pending changes.
   base::DictionaryValue changes_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenContext);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_SCREEN_CONTEXT_H_