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..64487d596caa226001646d908f04a18b2004cad9 100644
--- a/ui/android/resources/resource_manager.h
+++ b/ui/android/resources/resource_manager.h
@@ -48,6 +48,8 @@ class UI_ANDROID_EXPORT ResourceManager {
     gfx::Size size;
     gfx::Rect padding;
     gfx::Rect aperture;
+    // The tint of the resource if applicable, 0 if no tint.
+    int tint;
   };
 
   // Obtain a handle to the Java ResourceManager counterpart.
@@ -60,6 +62,12 @@ 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. |default_color| is used if the cache becomes
+  // too large.
+  virtual Resource* GetStaticResourceWithTint(
+      int res_id, int tint_color, int default_color) = 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;