[ Do not submit ] Prototype for invalidation analysis

Source/core/rendering/GraphicsContextAnnotator.cpp

Index: Source/core/rendering/GraphicsContextAnnotator.cpp
diff --git a/Source/core/rendering/GraphicsContextAnnotator.cpp b/Source/core/rendering/GraphicsContextAnnotator.cpp
index 8276977da98c0baee828fd7ead89555fcfdc808e..573494bbd6b268dea7c2890947a31bb4c0526d19 100644
--- a/Source/core/rendering/GraphicsContextAnnotator.cpp
+++ b/Source/core/rendering/GraphicsContextAnnotator.cpp
@@ -33,6 +33,7 @@
 #include "core/rendering/GraphicsContextAnnotator.h"
 
 #include "core/inspector/InspectorNodeIds.h"
+#include "core/inspector/InspectorTraceEvents.h"
 #include "core/rendering/PaintInfo.h"
 #include "core/rendering/RenderObject.h"
 #include "platform/graphics/GraphicsContextAnnotation.h"
@@ -86,6 +87,16 @@ static const char* paintPhaseName(blink::PaintPhase phase)
 
 namespace blink {
 
+// FIXME: Introduce a real paint API instead of piggybacking on GraphicsContextAnnotator.
+void GraphicsContextAnnotator::trackPaintInvalidation(const PaintInfo&, RenderObject* renderer)
+{
+    TRACE_EVENT_INSTANT1(
+        TRACE_DISABLED_BY_DEFAULT("devtools.timeline.paintInvalidationTracking"),
+        "PaintInvalidationTracking",
+        "data",
+        InspectorPaintInvalidationTrackingEvent::data(renderer));

[caseq, 2014/08/26 12:19:07]

Why do we need this? We already have nodeId in the annotation...

+}
+
 void GraphicsContextAnnotator::annotate(const PaintInfo& paintInfo, const RenderObject* object)
 {
     ASSERT(!m_context);