Chrome on Android now supports loading the shared library directly from the APK file.

This patch makes two changes to breakpad to enable crash reporting to work correctly when the library is inside another file (an archive):

- Do not filter mappings which map an executable at a non-zero offset.
- If such an executable is mapped look in the ELF information for the
shared object name and use that name in the minidump.

Note this change doesn't care about the archive format and isn't Android
specific (though loading the shared library this way is currently only done on Android).

BUG=390618
R=thestig@chromium.org

Review URL: https://breakpad.appspot.com/7684002

Patch from Anton Carver <anton@chromium.org>.

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1355 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/tools/linux/md2core/minidump-2-core.cc

@@ -997,7 +997,7 @@ main(int argc, char** argv) {
   if (argc != argi + 1)
     return usage(argv[0]);
 
-  MemoryMappedFile mapped_file(argv[argi]);
+  MemoryMappedFile mapped_file(argv[argi], 0);
   if (!mapped_file.data()) {
     fprintf(stderr, "Failed to mmap dump file\n");
     return 1;