[Invalidation Tracking] Add trace events for compositor based invalidations

Source/core/inspector/InspectorTraceEvents.cpp

 // Copyright 2014 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 "config.h"
 #include "core/inspector/InspectorTraceEvents.h"
 
 #include "bindings/core/v8/ScriptCallStackFactory.h"
 #include "bindings/core/v8/ScriptGCEvent.h"
 #include "bindings/core/v8/ScriptSourceCode.h"
@@ skipping 239 matching lines @@
 {
     LocalFrame* frame = renderer.frame();
     FrameView* view = frame->view();
     FloatQuad absolute = renderer.localToAbsoluteQuad(FloatQuad(rect));
     quad->setP1(view->contentsToRootView(roundedIntPoint(absolute.p1())));
     quad->setP2(view->contentsToRootView(roundedIntPoint(absolute.p2())));
     quad->setP3(view->contentsToRootView(roundedIntPoint(absolute.p3())));
     quad->setP4(view->contentsToRootView(roundedIntPoint(absolute.p4())));
 }
 
+const char InspectorLayerInvalidationTrackingEvent::SquashingLayerGeometryWasUpdated[] = "Squashing layer geometry was updated.";

[pdr., 2014/09/12 04:07:17]

I'm a little worried about using the word "Squashing" because only a handful of
folks understand what it means. I think we should move forward with this as it
is, but we may need to revisit it in the future.

[kouhei (in TOK), 2014/09/12 05:02:12]

Understood.

+const char InspectorLayerInvalidationTrackingEvent::AddedToSquashingLayer[] = "The layer may have been added to an already-existing squashing layer.";
+const char InspectorLayerInvalidationTrackingEvent::RemovedFromSquashingLayer[] = "Removed the layer from a squashing layer.";
+const char InspectorLayerInvalidationTrackingEvent::ReflectionLayerChanged[] = "Reflection layer change.";
+const char InspectorLayerInvalidationTrackingEvent::NewCompositedLayer[] = "Assigned a new composited layer.";
+const char InspectorLayerInvalidationTrackingEvent::AncestorRequiresNewLayer[] = "A new composited layer is needed based on the RenderLayer's compositing ancestor's properties.";
+
+PassRefPtr<TraceEvent::ConvertableToTraceFormat> InspectorLayerInvalidationTrackingEvent::data(const RenderObject* paintInvalidationContainer, const char* reason)
+{
+    RefPtr<TracedValue> value = TracedValue::create();
+    value->setString("frame", toHexString(paintInvalidationContainer->frame()));
+    setGeneratingNodeId(value.get(), "paintId", paintInvalidationContainer);
+    value->setString("reason", reason);
+    return value;
+}
+
 PassRefPtr<TraceEvent::ConvertableToTraceFormat> InspectorPaintEvent::data(RenderObject* renderer, const LayoutRect& clipRect, const GraphicsLayer* graphicsLayer)
 {
     RefPtr<TracedValue> value = TracedValue::create();
     value->setString("frame", toHexString(renderer->frame()));
     FloatQuad quad;
     localToPageQuad(*renderer, clipRect, &quad);
     createQuad(value.get(), "clip", quad);
     setGeneratingNodeId(value.get(), "nodeId", renderer);
     int graphicsLayerId = graphicsLayer ? graphicsLayer->platformLayer()->id() : 0;
     value->setInteger("layerId", graphicsLayerId);
@@ skipping 88 matching lines @@
 
 PassRefPtr<TraceEvent::ConvertableToTraceFormat> InspectorTracingSessionIdForWorkerEvent::data(const String& sessionId, WorkerThread* workerThread)
 {
     RefPtr<TracedValue> value = TracedValue::create();
     value->setString("sessionId", sessionId);
     value->setDouble("workerThreadId", workerThread->platformThreadId());
     return value;
 }
 
 }