NotForReview: Expose the global memory budget (chromium side)

content/common/memory_coordinator.mojom

Index: content/common/memory_coordinator.mojom
diff --git a/content/common/memory_coordinator.mojom b/content/common/memory_coordinator.mojom
index 82d40b97d67a40d5877bc68f440a1c5cbe40dbd2..6fe7787523463f8c962246f9ee39d02a479aa641 100644
--- a/content/common/memory_coordinator.mojom
+++ b/content/common/memory_coordinator.mojom
@@ -11,4 +11,12 @@ import "content/common/child_memory_coordinator.mojom";
 interface MemoryCoordinatorHandle {
   // A child process calls this method when ChildMemoryCoordinator is created.
   AddChild(ChildMemoryCoordinator child);
+
+  // Gets a shared memory handle for the global memory budget. A child
+  // process calls this method when ChildMemoryCoordinator is created.
+  GetGlobalBudgetHandle() => (handle<shared_buffer> budget_handle);
+
+  // TODO(bashi): Tentative.
+  // Sets an interval for a task to update the global memory budget.
+  SetGlobalBudgetUpdateInterval(uint32 interval_ms);
 };