Convert ozone/drm DisplaySnapshot_Param to DisplaySnapshotMojo

ui/display/types/display_snapshot_mojo.h

Index: ui/display/types/display_snapshot_mojo.h
diff --git a/ui/display/types/display_snapshot_mojo.h b/ui/display/types/display_snapshot_mojo.h
index 369ffb8af69181cad973b823196328de2f047e28..d68f93b6c18dbebcada916ed34b1a9ef80d43a88 100644
--- a/ui/display/types/display_snapshot_mojo.h
+++ b/ui/display/types/display_snapshot_mojo.h
@@ -35,12 +35,30 @@ class DISPLAY_TYPES_EXPORT DisplaySnapshotMojo : public DisplaySnapshot {
                       const DisplayMode* current_mode,
                       const DisplayMode* native_mode,
                       const gfx::Size& maximum_cursor_size);
+
+  DisplaySnapshotMojo(int64_t display_id,
+                      const gfx::Point& origin,
+                      const gfx::Size& physical_size,
+                      DisplayConnectionType type,
+                      bool is_aspect_preserving_scaling,
+                      bool has_overscan,
+                      bool has_color_correction_matrix,
+                      std::string display_name,
+                      const base::FilePath& sys_path,
+                      DisplayModeList modes,
+                      const std::vector<uint8_t>& edid,
+                      const DisplayMode* current_mode,
+                      const DisplayMode* native_mode,
+                      std::string string_representation);
+
   ~DisplaySnapshotMojo() override;
 
-  // DisplaySnapshot:
+  // display::DisplaySnapshot override:
   std::string ToString() const override;
 
  private:
+  std::string string_representation_;
+
   DISALLOW_COPY_AND_ASSIGN(DisplaySnapshotMojo);
 };