Fix "unused variable" warnings.

chrome/browser/android/compositor/decoration_title.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_DECORATION_TITLE_H_
 #define CHROME_BROWSER_ANDROID_COMPOSITOR_DECORATION_TITLE_H_
 
 #include <jni.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/resources/ui_resource_client.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/transform.h"
 
 namespace cc {
 class Layer;
 class UIResourceLayer;
 }
 
 namespace ui {
 class ResourceManager;
 }
 
 namespace chrome {
 namespace android {
 
-class LayerTitleCache;
-
 class DecorationTitle {
  public:
-  DecorationTitle(LayerTitleCache* layer_title_cache,
-                  ui::ResourceManager* resource_manager,
+  DecorationTitle(ui::ResourceManager* resource_manager,
                   int title_resource_id,
                   int favicon_resource_id,
                   int spinner_resource_id,
                   int spinner_resource_id_incognito,
                   int fade_width,
                   int favicon_start_padding,
                   int favicon_end_padding,
                   bool is_incognito,
                   bool is_rtl);
   virtual ~DecorationTitle();
@@ skipping 35 matching lines @@
   float spinner_rotation_;
   int favicon_start_padding_;
   int favicon_end_padding_;
   bool is_incognito_;
   bool is_rtl_;
   bool is_loading_;
   std::unique_ptr<gfx::Transform> transform_;
 
   ui::ResourceManager* resource_manager_;
 
-  LayerTitleCache* layer_title_cache_;
-
   DISALLOW_COPY_AND_ASSIGN(DecorationTitle);
 };
 
 }  // namespace android
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_DECORATION_TITLE_H_