Switch the Linux minidump writer to use MDCVInfoELF for CV data.

src/client/linux/minidump_writer/linux_dumper.h

Index: src/client/linux/minidump_writer/linux_dumper.h
diff --git a/src/client/linux/minidump_writer/linux_dumper.h b/src/client/linux/minidump_writer/linux_dumper.h
index f7fe1dd9dfa39ca6c9b9cd32b994dba9ac574f5c..574af9e5a9de3d277b71f9ccf30d8f49aec9253f 100644
--- a/src/client/linux/minidump_writer/linux_dumper.h
+++ b/src/client/linux/minidump_writer/linux_dumper.h
@@ -49,6 +49,7 @@
 
 #include "client/linux/dump_writer_common/mapping_info.h"
 #include "client/linux/dump_writer_common/thread_info.h"
+#include "common/linux/file_id.h"
 #include "common/memory.h"
 #include "google_breakpad/common/minidump_format.h"
 
@@ -126,10 +127,13 @@ class LinuxDumper {
   // Generate a File ID from the .text section of a mapped entry.
   // If not a member, mapping_id is ignored. This method can also manipulate the
   // |mapping|.name to truncate "(deleted)" from the file name if necessary.
+  // |identifier_length| must be set to the length of the |identifier| buffer.
+  // If the buffer is not large enough to contain the identifer, return false
+  // and set |identifier_length| to the required length.
   bool ElfFileIdentifierForMapping(const MappingInfo& mapping,
                                    bool member,
                                    unsigned int mapping_id,
-                                   uint8_t identifier[sizeof(MDGUID)]);
+                                   wasteful_vector<uint8_t>& identifier);
 
   uintptr_t crash_address() const { return crash_address_; }
   void set_crash_address(uintptr_t crash_address) {