Add tinted static UI resource cache

ui/android/resources/resource_manager.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 UI_ANDROID_RESOURCES_RESOURCE_MANAGER_H_
 #define UI_ANDROID_RESOURCES_RESOURCE_MANAGER_H_
 
 #include <memory>
+#include <unordered_map>
+#include <unordered_set>
 
 #include "base/android/jni_android.h"
 #include "cc/resources/scoped_ui_resource.h"
 #include "ui/android/resources/crushed_sprite_resource.h"
 #include "ui/android/ui_android_export.h"
 #include "ui/gfx/geometry/insets_f.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace ui {
@@ skipping 34 matching lines @@
   // Obtain a handle to the Java ResourceManager counterpart.
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaObject() = 0;
 
   // Return a handle to the resource specified by |res_type| and |res_id|.
   // If the resource has not been loaded, loading will be performed
   // synchronously, blocking until the load completes.
   // If load fails, a null handle will be returned and it is up to the caller
   // to react appropriately.
   virtual Resource* GetResource(AndroidResourceType res_type, int res_id) = 0;
 
+  // Return a handle to a static resource specified by |res_id| that has a tint
+  // of |tint_color| applied to it.
+  virtual Resource* GetStaticResourceWithTint(int res_id, int tint_color) = 0;
+
+  // Remove tints that were unused in the current frame being built. This
+  // function takes a set |used_tints| and removes all the tints not in the set
+  // from the cache.
+  virtual void RemoveUnusedTints(const std::unordered_set<int>& used_tints) = 0;
+
   // Trigger asynchronous loading of the resource specified by |res_type| and
   // |res_id|, if it has not yet been loaded.
   virtual void PreloadResource(AndroidResourceType res_type, int res_id) = 0;
 
   // Return a handle to the CrushedSpriteResource specified by |bitmap_res_id|
   // and |metadata_res_id|. If the resource has not been loaded, loading will be
   // performed synchronously, blocking until the load completes. If load fails,
   // a null handle will be returned and it is up to the caller to react
   // appropriately.
   virtual CrushedSpriteResource* GetCrushedSpriteResource(
       int bitmap_res_id, int metadata_res_id) = 0;
 
   // Convenience wrapper method.
   cc::UIResourceId GetUIResourceId(AndroidResourceType res_type, int res_id) {
     Resource* resource = GetResource(res_type, res_id);
     return resource && resource->ui_resource ? resource->ui_resource->id() : 0;
   }
 
  protected:
   virtual ~ResourceManager() {}
 };
 
 }  // namespace ui
 
 #endif  // UI_ANDROID_RESOURCES_RESOURCE_MANAGER_H_