cc: Change required_for_activation bookkeeping.

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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 "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 1198 matching lines @@
   // what's necessary.
   SetFullRootLayerDamage();
   if (client_ && !client_->IsInsideDraw())
     client_->DidInitializeVisibleTileOnImplThread();
 }
 
 void LayerTreeHostImpl::NotifyReadyToActivate() {
   client_->NotifyReadyToActivate();
 }
 
+void LayerTreeHostImpl::NotifyTileInitialized(const Tile* tile) {
+  TRACE_EVENT0("cc", "LayerTreeHostImpl::NotifyTileInitialized");
+
+  if (active_tree_) {
+    LayerImpl* layer_impl =
+        active_tree_->FindActiveTreeLayerById(tile->layer_id());
+    if (layer_impl)
+      layer_impl->NotifyTileInitialized(tile);
+  }
+
+  if (pending_tree_) {
+    LayerImpl* layer_impl =
+        pending_tree_->FindPendingTreeLayerById(tile->layer_id());
+    if (layer_impl)
+      layer_impl->NotifyTileInitialized(tile);
+  }
+}
+
 void LayerTreeHostImpl::SetMemoryPolicy(const ManagedMemoryPolicy& policy) {
   SetManagedMemoryPolicy(policy, zero_budget_);
 }
 
 void LayerTreeHostImpl::SetTreeActivationCallback(
     const base::Closure& callback) {
   DCHECK(proxy_->IsImplThread());
   DCHECK(settings_.impl_side_painting || callback.is_null());
   tree_activation_callback_ = callback;
 }
@@ skipping 1822 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc