HUD: Show first paint invalidation in red

cc/layers/layer_client.h

Index: cc/layers/layer_client.h
diff --git a/cc/layers/layer_client.h b/cc/layers/layer_client.h
index 5a20b11f8f46f088c48f2edcd9cfd7de34a32b88..04a4bdefa0d03550ccd688ee8ef651b15ba6a95e 100644
--- a/cc/layers/layer_client.h
+++ b/cc/layers/layer_client.h
@@ -7,24 +7,26 @@
 
 #include <string>
 
+#include "base/debug/trace_event_impl.h"
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
 
-namespace base {
-namespace debug {
-class ConvertableToTraceFormat;
-}
-}
-
 namespace cc {
 
+class CC_EXPORT LayerDebugInfo : public base::debug::ConvertableToTraceFormat {
+ public:
+  virtual bool IncludesFirstPaintInvalidation() const = 0;
+
+ protected:
+  virtual ~LayerDebugInfo() {}
+};
+
 class CC_EXPORT LayerClient {
  public:
   // Returns a pointer to a debug info object, if one has been computed.
   // If not, returns NULL. If the returned pointer is non-NULL, the caller takes
   // ownership of the pointer.
-  virtual scoped_refptr<base::debug::ConvertableToTraceFormat>
-      TakeDebugInfo() = 0;
+  virtual scoped_refptr<LayerDebugInfo> TakeDebugInfo() = 0;
 
  protected:
   virtual ~LayerClient() {}