Implement ModuleSnapshotWin::UUID

snapshot/win/pe_image_reader.h

Index: snapshot/win/pe_image_reader.h
diff --git a/snapshot/win/pe_image_reader.h b/snapshot/win/pe_image_reader.h
index 71b4863e8ffdaa0777091bdb87590e3f078d7ffd..2273a8e6ac8bdbf0fed8d28440abb4a6dd2c5b79 100644
--- a/snapshot/win/pe_image_reader.h
+++ b/snapshot/win/pe_image_reader.h
@@ -21,6 +21,7 @@
 
 #include "base/basictypes.h"
 #include "util/misc/initialization_state_dcheck.h"
+#include "util/misc/uuid.h"
 #include "util/win/address_types.h"
 #include "util/win/checked_win_address_range.h"
 
@@ -93,7 +94,21 @@ class PEImageReader {
   //!     messages. Other failures will result in messages being logged.
   bool GetCrashpadInfo(process_types::CrashpadInfo* crashpad_info) const;
 
+  //! \brief Obtains information from the module's debug directory, if any.
+  //!
+  //! \param[out] uuid The unique identifier of the executable/PDB.
+  //! \param[out] age The age field for the pdb (the number of times it's been
+  //!     relinked).
+  //! \param[out] pdbname Name of the pdb file.
+  //! \return `true` on success, or `false` if the module has no debug directory
+  //!     entry.
+  bool DebugDirectoryInformation(UUID* uuid, DWORD* age, std::string* pdbname);
+
  private:
+  //! \brief Reads the `IMAGE_NT_HEADERS` from the beginning of the image.
+  bool ReadNtHeaders(WinVMAddress* nt_header_address,
+                     IMAGE_NT_HEADERS* nt_headers) const;
+
   //! \brief Finds a given section by name in the image.
   bool GetSectionByName(const std::string& name,
                         IMAGE_SECTION_HEADER* section) const;