cc: Change CallFunctionForSubtree to use lambdas.

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 1435 matching lines @@
   if (!InnerViewportScrollLayer())
     return metadata;
 
   // TODO(miletus) : Change the metadata to hold ScrollOffset.
   metadata.root_scroll_offset = gfx::ScrollOffsetToVector2dF(
       active_tree_->TotalScrollOffset());
 
   return metadata;
 }
 
-static void LayerTreeHostImplDidBeginTracingCallback(LayerImpl* layer) {
-  layer->DidBeginTracing();
-}
-
 void LayerTreeHostImpl::DrawLayers(FrameData* frame,
                                    base::TimeTicks frame_begin_time) {
   TRACE_EVENT0("cc", "LayerTreeHostImpl::DrawLayers");
   DCHECK(CanDraw());
 
   if (!frame->composite_events.empty()) {
     frame_timing_tracker_->SaveTimeStamps(frame_begin_time,
                                           frame->composite_events);
   }
 
@@ skipping 29 matching lines @@
     paint_time_counter_->SavePaintTime(
         stats.begin_main_frame_to_commit_duration.GetLastTimeDelta());
   }
 
   bool is_new_trace;
   TRACE_EVENT_IS_NEW_TRACE(&is_new_trace);
   if (is_new_trace) {
     if (pending_tree_) {
       LayerTreeHostCommon::CallFunctionForSubtree(
           pending_tree_->root_layer(),
-          base::Bind(&LayerTreeHostImplDidBeginTracingCallback));
+          [](LayerImpl* layer) { layer->DidBeginTracing(); });
     }
     LayerTreeHostCommon::CallFunctionForSubtree(
         active_tree_->root_layer(),
-        base::Bind(&LayerTreeHostImplDidBeginTracingCallback));
+        [](LayerImpl* layer) { layer->DidBeginTracing(); });
   }
 
   {
     TRACE_EVENT0("cc", "DrawLayers.FrameViewerTracing");
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(
        TRACE_DISABLED_BY_DEFAULT("cc.debug") ","
        TRACE_DISABLED_BY_DEFAULT("cc.debug.quads") ","
        TRACE_DISABLED_BY_DEFAULT("devtools.timeline.layers"),
        "cc::LayerTreeHostImpl",
        id_,
@@ skipping 1942 matching lines @@
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfForwardingToMainThread() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnForwardScrollUpdateToMainThreadOnImpl();
 }
 
 }  // namespace cc