cc: Clear the invalidation history when moving between compositors.

cc/resources/picture_pile.h

Index: cc/resources/picture_pile.h
diff --git a/cc/resources/picture_pile.h b/cc/resources/picture_pile.h
index bab06c81aead743c8501897b08c0591b38554f92..bdba5790832688d441b6c2705126986233bd5fb2 100644
--- a/cc/resources/picture_pile.h
+++ b/cc/resources/picture_pile.h
@@ -29,6 +29,7 @@ class CC_EXPORT PicturePile : public RecordingSource {
                                    const gfx::Rect& visible_layer_rect,
                                    int frame_number,
                                    RecordingMode recording_mode) override;
+  void DidMoveToNewCompositor() override;
   scoped_refptr<RasterSource> CreateRasterSource(
       bool can_use_lcd_text) const override;
   gfx::Size GetSize() const final;
@@ -57,6 +58,8 @@ class CC_EXPORT PicturePile : public RecordingSource {
       return GetInvalidationFrequency();
     }
 
+    void ResetInvalidationHistory();
+
    private:
     void AdvanceInvalidationHistory(int frame_number);
     float GetInvalidationFrequency() const;