NOCOMMIT prototype: GRC service plumbing and process priority

content/browser/resource_coordinator_web_contents_observer.cc

+// Copyright 2017 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/resource_coordinator_web_contents_observer.h"
+
+#include <memory>
+
+#include "content/browser/frame_host/render_frame_host_impl.h"
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/common/service_manager_connection.h"
+
+namespace content {
+
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(ResourceCoordinatorWebContentsObserver);
+
+ResourceCoordinatorWebContentsObserver::ResourceCoordinatorWebContentsObserver(
+    WebContents* web_contents)
+    : WebContentsObserver(web_contents) {
+  resource_coordinator_ =
+      base::MakeUnique<resource_coordinator::ResourceCoordinatorInterface>(
+          ServiceManagerConnection::GetForProcess()->GetConnector(),
+          resource_coordinator::mojom::IDType::WEBCONTENTS);
+}
+
+ResourceCoordinatorWebContentsObserver::
+    ~ResourceCoordinatorWebContentsObserver() = default;
+
+void ResourceCoordinatorWebContentsObserver::WasShown() {
+  DCHECK(resource_coordinator_);
+  resource_coordinator_->SendEvent(
+      resource_coordinator::mojom::EventType::ON_WEBCONTENTS_SHOWN);
+}
+
+void ResourceCoordinatorWebContentsObserver::WasHidden() {
+  DCHECK(resource_coordinator_);
+  resource_coordinator_->SendEvent(
+      resource_coordinator::mojom::EventType::ON_WEBCONTENTS_HIDDEN);
+}
+
+void ResourceCoordinatorWebContentsObserver::ReadyToCommitNavigation(
+    NavigationHandle* navigation_handle) {
+  DCHECK(resource_coordinator_);
+  resource_coordinator::ResourceCoordinatorInterface*
+      frame_resource_coordinator = static_cast<RenderFrameHostImpl*>(
+                                       navigation_handle->GetRenderFrameHost())
+                                       ->GetFrameResourceCoordinator();
+  DCHECK(frame_resource_coordinator);
+
+  resource_coordinator_->AddChild(*frame_resource_coordinator);
+  frame_resource_coordinator->SendEvent(
+      resource_coordinator::mojom::EventType::ON_COMMIT);
+}
+
+void ResourceCoordinatorWebContentsObserver::DidFinishNavigation(
+    NavigationHandle* navigation_handle) {
+  DCHECK(resource_coordinator_);
+  RenderFrameHostImpl* render_frame = static_cast<RenderFrameHostImpl*>(
+      navigation_handle->GetRenderFrameHost());
+  DCHECK(render_frame);
+  resource_coordinator::ResourceCoordinatorInterface*
+      frame_resource_coordinator = render_frame->GetFrameResourceCoordinator();
+  DCHECK(frame_resource_coordinator);
+  DCHECK(render_frame->GetProcess());
+  resource_coordinator::ResourceCoordinatorInterface*
+      process_resource_coordinator =
+          static_cast<RenderProcessHostImpl*>(render_frame->GetProcess())
+              ->GetProcessResourceCoordinator();
+  DCHECK(process_resource_coordinator);
+
+  process_resource_coordinator->AddChild(*frame_resource_coordinator);
+  resource_coordinator_->AddChild(*process_resource_coordinator);
+}
+
+}  // namespace content