Move title creation logic to native

chrome/browser/android/compositor/layer_title_cache.h

 // Copyright 2014 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_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_
 #define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_
 
 #include <jni.h>
 
 #include "base/android/jni_android.h"
@@ skipping 52 matching lines @@
                      jint favicon_resource_id);
 
   void ClearExcept(JNIEnv* env,
                    const base::android::JavaParamRef<jobject>& obj,
                    jint except_id);
 
   // Returns the layer that represents the title of tab of tab_id.
   // Returns NULL if no layer can be found.
   DecorationTitle* GetTitleLayer(int tab_id);
 
+  // Trigger the creation of a new title layer if one does not exist.
+  void BuildTitleLayer(int tab_id);
+
   void SetResourceManager(ui::ResourceManager* resource_manager);
 
  private:
   virtual ~LayerTitleCache();
 
   IDMap<DecorationTitle, IDMapOwnPointer> layer_cache_;
 
   JavaObjectWeakGlobalRef weak_java_title_cache_;
   int fade_width_;
   int favicon_start_padding_;
   int favicon_end_padding_;
 
   int spinner_resource_id_;
   int spinner_incognito_resource_id_;
 
   ui::ResourceManager* resource_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTitleCache);
 };
 
 bool RegisterLayerTitleCache(JNIEnv* env);
 
 }  // namespace android
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_TITLE_CACHE_H_