cc: Add main frame timing info to frame timing tracker.

cc/layers/layer_impl.cc

 // Copyright 2012 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/layers/layer_impl.h"
 
 #include "base/json/json_reader.h"
 #include "base/strings/stringprintf.h"
 #include "base/trace_event/trace_event.h"
 #include "base/trace_event/trace_event_argument.h"
@@ skipping 1026 matching lines @@
   NoteLayerPropertyChangedForSubtree();
 }
 
 void LayerImpl::PassFrameTimingRequests(
     std::vector<FrameTimingRequest>* requests) {
   frame_timing_requests_.swap(*requests);
   frame_timing_requests_dirty_ = true;
   SetNeedsPushProperties();
 }
 
+void LayerImpl::GatherFrameTimingRequestIds(std::vector<int64_t>* request_ids) {
+  for (const auto& request : frame_timing_requests_)

[brianderson, 2015/03/25 19:46:15]

To avoid potential multiple resizes:

request_ids->insert(request_ids.end(), frame_timing_requests_.begin(),
frame_timing_requests_.end())

Or:

DCHECK(request_ids.empty());
request_ids.swap(frame_timing_requests_);

[vmpstr, 2015/03/26 21:02:22]

It goes from a vector<FrameTimingRequest> to vector<int64_t>, so I'm not sure
that would work here.
(It does a request.id() below). I could reserve request_ids to
requests_ids.size() + frame_timing_requests_.size()? I think that's a bit
premature though.

[brianderson, 2015/03/26 21:14:18]

Didn't notice that. Nevermind then.

+    request_ids->push_back(request.id());
+}
+
 void LayerImpl::SetTransform(const gfx::Transform& transform) {
   if (transform_ == transform)
     return;
 
   transform_ = transform;
   transform_is_invertible_ = transform_.IsInvertible();
   NoteLayerPropertyChangedForSubtree();
 }
 
 void LayerImpl::SetTransformAndInvertibility(const gfx::Transform& transform,
@@ skipping 561 matching lines @@
   gfx::Transform scaled_draw_transform =
       draw_properties_.target_space_transform;
   scaled_draw_transform.Scale(SK_MScalar1 / scale, SK_MScalar1 / scale);
   gfx::Size scaled_content_bounds =
       gfx::ToCeiledSize(gfx::ScaleSize(content_bounds(), scale));
   return MathUtil::MapEnclosingClippedRect(scaled_draw_transform,
                                            gfx::Rect(scaled_content_bounds));
 }
 
 }  // namespace cc