android: Use UIResource for overscroll glow

content/browser/android/ui_resource_provider_impl.cc

 // 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.
 
 #include "content/browser/android/ui_resource_provider_impl.h"
 
 #include "cc/resources/ui_resource_client.h"
 #include "cc/trees/layer_tree_host.h"
 #include "content/public/browser/android/ui_resource_client_android.h"
 
 namespace content {
 
-UIResourceProviderImpl::UIResourceProviderImpl() : host_(NULL) {
+UIResourceProviderImpl::UIResourceProviderImpl()
+    : system_ui_resource_manager_(this), host_(NULL) {
 }
 
 UIResourceProviderImpl::~UIResourceProviderImpl() {
   SetLayerTreeHost(NULL);
 }
 
 void UIResourceProviderImpl::SetLayerTreeHost(cc::LayerTreeHost* host) {
   if (host_ == host)
     return;
   host_ = host;
   UIResourcesAreInvalid();
+
+  if (host_)
+    system_ui_resource_manager_.RefreshResources();
 }
 
 void UIResourceProviderImpl::UIResourcesAreInvalid() {
   UIResourceClientMap client_map = ui_resource_client_map_;
   ui_resource_client_map_.clear();
   for (UIResourceClientMap::iterator iter = client_map.begin();
        iter != client_map.end();
        iter++) {
     iter->second->UIResourceIsInvalid();
   }
@@ skipping 15 matching lines @@
       ui_resource_client_map_.find(ui_resource_id);
   DCHECK(iter != ui_resource_client_map_.end());
 
   ui_resource_client_map_.erase(iter);
 
   if (!host_)
     return;
   host_->DeleteUIResource(ui_resource_id);
 }
 
+ui::SystemUIResourceManager&
+UIResourceProviderImpl::GetSystemUIResourceManager() {
+  return system_ui_resource_manager_;
+}
+
 }  // namespace content