Full hookup of BudgetManager interfaces to BudgetDatabase.

chrome/browser/budget_service/budget_service_impl.cc

Index: chrome/browser/budget_service/budget_service_impl.cc
diff --git a/chrome/browser/budget_service/budget_service_impl.cc b/chrome/browser/budget_service/budget_service_impl.cc
index 5a6b8b857681a27b94605ddd76559a3f0e74569a..cae6efd6797e930894ffd9742428437b560bb48f 100644
--- a/chrome/browser/budget_service/budget_service_impl.cc
+++ b/chrome/browser/budget_service/budget_service_impl.cc
@@ -39,7 +39,16 @@ void BudgetServiceImpl::GetCost(blink::mojom::BudgetOperationType type,
 
 void BudgetServiceImpl::GetBudget(const url::Origin& origin,
                                   const GetBudgetCallback& callback) {
-  // TODO(harkness) Call the BudgetManager once it supports detailed GetBudget
-  // calls.
-  callback.Run(0);
+  // The RenderProcessHost should still be alive as long as any connections are
+  // alive, and if the BudgetService mojo connection is down, the
+  // BudgetServiceImpl should have been destroyed.
+  content::RenderProcessHost* host =
+      content::RenderProcessHost::FromID(render_process_id_);
+  DCHECK(host);
+
+  // Query the BudgetManager for the budget.
+  content::BrowserContext* context = host->GetBrowserContext();
+  // TODO(harkness): Convert BudgetManager to use url::Origin.
+  const GURL gurl(origin.Serialize());
+  BudgetManagerFactory::GetForProfile(context)->GetBudget(gurl, callback);
 }