Add tinted static UI resource cache

ui/android/resources/resource_manager.h

Index: ui/android/resources/resource_manager.h
diff --git a/ui/android/resources/resource_manager.h b/ui/android/resources/resource_manager.h
index 5161ace541078aafd1966424fdc19077a0fc30dd..81e004b81d76be0340ea318005e78e67c136b6b3 100644
--- a/ui/android/resources/resource_manager.h
+++ b/ui/android/resources/resource_manager.h
@@ -6,6 +6,8 @@
 #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"
@@ -60,6 +62,15 @@ class UI_ANDROID_EXPORT ResourceManager {
   // 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;