Use LayerTreeHostImpl id instead of its address as id in trace events

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 258 matching lines @@
                                    settings.top_controls_height,
                                    settings.top_controls_show_threshold,
                                    settings.top_controls_hide_threshold);
   }
 
   SetDebugState(settings.initial_debug_state);
 
   // LTHI always has an active tree.
   active_tree_ = LayerTreeImpl::create(this);
   TRACE_EVENT_OBJECT_CREATED_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", this);
+      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", id_);
 }
 
 LayerTreeHostImpl::~LayerTreeHostImpl() {
   DCHECK(proxy_->IsImplThread());
   TRACE_EVENT0("cc", "LayerTreeHostImpl::~LayerTreeHostImpl()");
   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", this);
+      TRACE_DISABLED_BY_DEFAULT("cc.debug"), "cc::LayerTreeHostImpl", id_);
 
   if (input_handler_client_) {
     input_handler_client_->WillShutdown();
     input_handler_client_ = NULL;
   }
 
   // The layer trees must be destroyed before the layer tree host. We've
   // made a contract with our animation controllers that the registrar
   // will outlive them, and we must make good.
   if (recycle_tree_)
@@ skipping 1144 matching lines @@
       LayerTreeHostCommon::CallFunctionForSubtree(
           pending_tree_->root_layer(),
           base::Bind(&LayerTreeHostImplDidBeginTracingCallback));
     }
     LayerTreeHostCommon::CallFunctionForSubtree(
         active_tree_->root_layer(),
         base::Bind(&LayerTreeHostImplDidBeginTracingCallback));
   }
 
   TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(
-      TRACE_DISABLED_BY_DEFAULT("cc.debug") ","
-      TRACE_DISABLED_BY_DEFAULT("cc.debug.quads"), "cc::LayerTreeHostImpl",
-      this, TracedValue::FromValue(AsValueWithFrame(frame).release()));
+      TRACE_DISABLED_BY_DEFAULT("cc.debug") "," TRACE_DISABLED_BY_DEFAULT(
+          "cc.debug.quads"),
+      "cc::LayerTreeHostImpl",
+      id_,
+      TracedValue::FromValue(AsValueWithFrame(frame).release()));
 
   // Because the contents of the HUD depend on everything else in the frame, the
   // contents of its texture are updated as the last thing before the frame is
   // drawn.
   if (active_tree_->hud_layer()) {
     TRACE_EVENT0("cc", "DrawLayers.UpdateHudTexture");
     active_tree_->hud_layer()->UpdateHudTexture(
         GetDrawMode(output_surface_.get()), resource_provider_.get());
   }
 
@@ skipping 1657 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