Hold a reference to any kind of context in WindowAndroid.

ui/android/resources/resource_manager_impl.h

Index: ui/android/resources/resource_manager_impl.h
diff --git a/ui/android/resources/resource_manager_impl.h b/ui/android/resources/resource_manager_impl.h
index 6e74ca58e45af8365ae641bc5aff853c0f85ec5c..d9a92b0a0a28d3df8f77881b6671777270513b35 100644
--- a/ui/android/resources/resource_manager_impl.h
+++ b/ui/android/resources/resource_manager_impl.h
@@ -9,6 +9,7 @@
 #include "ui/android/resources/resource_manager.h"
 #include "ui/android/ui_android_export.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace ui {
 
@@ -16,7 +17,7 @@ class UI_ANDROID_EXPORT ResourceManagerImpl : public ResourceManager {
  public:
   static ResourceManagerImpl* FromJavaObject(jobject jobj);
 
-  ResourceManagerImpl();
+  explicit ResourceManagerImpl(gfx::NativeWindow native_window);
   ~ResourceManagerImpl() override;
 
   void Init(cc::LayerTreeHost* host);
@@ -47,6 +48,11 @@ class UI_ANDROID_EXPORT ResourceManagerImpl : public ResourceManager {
  private:
   friend class TestResourceManagerImpl;
 
+  // Only for testing
+  // TODO(gsennton) remove this by adding functionality to create a NativeWindow
+  // from a Context (and pass that NativeWindow to the public ctor)
+  explicit ResourceManagerImpl(jobject context);
+
   // Start loading the resource. virtual for testing.
   virtual void PreloadResourceFromJava(AndroidResourceType res_type,
                                        int res_id);