Frame Timeline Perfetto producer

This change adds a Perfetto Producer inside FrameTimeline that emits
DisplayFrame and SurfaceFrame as TracePackets as per the proto defined
in frame_timeline_event.proto
This change also adds a MockFrameTimeline to be used in unittests as a
part of TestableSurfaceFlinger. Due to perfetto capability, running
production FrameTimeline in TestableSurfaceFlinger has caused issues and
its best to isolate them.

Bug: 170914689
Test: libsurfaceflinger_unittest (whole test suite without filter)

Change-Id: Iabd5521629d16ded6ba3f165229caa74b1cb8eb7
diff --git a/services/surfaceflinger/SurfaceFlingerFactory.h b/services/surfaceflinger/SurfaceFlingerFactory.h
index 69e9c3c..deb1b52 100644
--- a/services/surfaceflinger/SurfaceFlingerFactory.h
+++ b/services/surfaceflinger/SurfaceFlingerFactory.h
@@ -45,6 +45,7 @@
 class StartPropertySetThread;
 class SurfaceFlinger;
 class SurfaceInterceptor;
+class TimeStats;
 
 struct DisplayDeviceCreationArgs;
 struct ISchedulerCallback;
@@ -60,6 +61,10 @@
 class RefreshRateConfigs;
 } // namespace scheduler
 
+namespace frametimeline {
+class FrameTimeline;
+} // namespace frametimeline
+
 namespace surfaceflinger {
 
 class NativeWindowSurface;
@@ -102,6 +107,8 @@
     virtual sp<EffectLayer> createEffectLayer(const LayerCreationArgs& args) = 0;
     virtual sp<ContainerLayer> createContainerLayer(const LayerCreationArgs& args) = 0;
     virtual std::unique_ptr<FrameTracer> createFrameTracer() = 0;
+    virtual std::unique_ptr<frametimeline::FrameTimeline> createFrameTimeline(
+            std::shared_ptr<TimeStats> timeStats) = 0;
 
 protected:
     ~Factory() = default;