Android: Don't destroy LayerTreeHost when Surface goes away

ui/android/resources/ui_resource_provider.h

Index: ui/android/resources/ui_resource_provider.h
diff --git a/ui/android/resources/ui_resource_provider.h b/ui/android/resources/ui_resource_provider.h
index a3b3cbcc439db6bb3d3fab28f9d6cfbf30b9d1e2..f37b2863e5d3d3d1f613ab279ce4d9882c23b5a1 100644
--- a/ui/android/resources/ui_resource_provider.h
+++ b/ui/android/resources/ui_resource_provider.h
@@ -15,36 +15,15 @@ class LayerTreeHost;
 
 namespace ui {
 
-class UIResourceClientAndroid;
-
 class UI_ANDROID_EXPORT UIResourceProvider {
  public:
-  UIResourceProvider();
-  ~UIResourceProvider();
-
-  void SetLayerTreeHost(cc::LayerTreeHost* host);
-
-  void UIResourcesAreInvalid();
-
-  virtual cc::UIResourceId CreateUIResource(
-      ui::UIResourceClientAndroid* client);
-
-  virtual void DeleteUIResource(cc::UIResourceId resource_id);
-
-  void SetSupportsETC1NonPowerOfTwo(bool supports_etc1_npot) {
-    supports_etc1_npot_ = supports_etc1_npot;
-  }
-
-  virtual bool SupportsETC1NonPowerOfTwo() const;
-
- private:
-  typedef base::hash_map<cc::UIResourceId, ui::UIResourceClientAndroid*>
-      UIResourceClientMap;
-  UIResourceClientMap ui_resource_client_map_;
-  cc::LayerTreeHost* host_;
-  bool supports_etc1_npot_;
+  virtual cc::UIResourceId CreateUIResource(cc::UIResourceClient* client) = 0;
+  virtual void DeleteUIResource(cc::UIResourceId resource_id) = 0;
+  virtual bool SupportsETC1NonPowerOfTwo() const = 0;
 
-  DISALLOW_COPY_AND_ASSIGN(UIResourceProvider);
+ protected:
+  UIResourceProvider() {}

[jdduke (slow), 2015/09/30 17:19:44]

Do we need the constructor?

[no sievers, 2015/09/30 21:58:48]

Done.

+  virtual ~UIResourceProvider() {}
 };
 
 }  // namespace ui