Add live updates for AshDevToolsCSSAgent

ash/common/devtools/ash_devtools_dom_agent.cc

Index: ash/common/devtools/ash_devtools_dom_agent.cc
diff --git a/ash/common/devtools/ash_devtools_dom_agent.cc b/ash/common/devtools/ash_devtools_dom_agent.cc
index 2dc2740e8cbcdd20648287d3eac1c4ee0109f466..a41dd36318a07a75cce5fa7734f4c5acb61c74be 100644
--- a/ash/common/devtools/ash_devtools_dom_agent.cc
+++ b/ash/common/devtools/ash_devtools_dom_agent.cc
@@ -131,12 +131,25 @@ void AshDevToolsDOMAgent::OnWindowStackingChanged(WmWindow* window) {
   AddWindowTree(window);
 }
 
+void AshDevToolsDOMAgent::OnWindowBoundsChanged(WmWindow* window,
+                                                const gfx::Rect& old_bounds,
+                                                const gfx::Rect& new_bounds) {
+  for (auto& observer : observers_)
+    observer.OnWindowBoundsChanged(window);
+}
+
 void AshDevToolsDOMAgent::OnWillRemoveView(views::Widget* widget,
                                            views::View* view) {
   if (view == widget->GetRootView())
     RemoveViewTree(view, nullptr, true);
 }
 
+void AshDevToolsDOMAgent::OnWidgetBoundsChanged(views::Widget* widget,
+                                                const gfx::Rect& new_bounds) {
+  for (auto& observer : observers_)
+    observer.OnWidgetBoundsChanged(widget);
+}
+
 void AshDevToolsDOMAgent::OnChildViewRemoved(views::View* view,
                                              views::View* parent) {
   RemoveViewTree(view, parent, true);
@@ -151,6 +164,11 @@ void AshDevToolsDOMAgent::OnChildViewReordered(views::View* view) {
   AddViewTree(view);
 }
 
+void AshDevToolsDOMAgent::OnViewBoundsChanged(views::View* view) {
+  for (auto& observer : observers_)
+    observer.OnViewBoundsChanged(view);
+}
+
 WmWindow* AshDevToolsDOMAgent::GetWindowFromNodeId(int nodeId) {
   return node_id_to_window_map_.count(nodeId) ? node_id_to_window_map_[nodeId]
                                               : nullptr;
@@ -181,6 +199,15 @@ int AshDevToolsDOMAgent::GetNodeIdFromView(views::View* view) {
   return view_to_node_id_map_[view];
 }
 
+void AshDevToolsDOMAgent::AddObserver(AshDevToolsDOMAgentObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void AshDevToolsDOMAgent::RemoveObserver(
+    AshDevToolsDOMAgentObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
 std::unique_ptr<ui::devtools::protocol::DOM::Node>
 AshDevToolsDOMAgent::BuildInitialTree() {
   std::unique_ptr<Array<DOM::Node>> children = Array<DOM::Node>::create();