Add breakpad support to mojo shell apk.

.gitignore

 # commonly generated files
 *.pyc
 *~
 .*.sw?
 .DS_Store
 .classpath
 .cproject
 .gdb_history
 .gdbinit
 .landmines
@@ skipping 15 matching lines @@
 /dart-pub-cache/
 /native_client/
 /out/
 /out_*/
 /sdch/open-vcdiff/
 /testing/gmock/
 /testing/gtest/
 /third_party/android_tools/
 /third_party/angle/
 /third_party/appurify-python/
+/third_party/breakpad/src/
 /third_party/boringssl/src/
 /third_party/brotli/src/
 /third_party/colorama/src/
 /third_party/dart-sdk/
 /third_party/dart-pkg/archive
 /third_party/dart-pkg/args
 /third_party/dart-pkg/box2d
 /third_party/dart-pkg/cassowary
 /third_party/dart-pkg/collection
 /third_party/dart-pkg/crypto
 /third_party/dart-pkg/newton
 /third_party/dart-pkg/path
 /third_party/dart-pkg/quiver
 /third_party/dart-pkg/source_span
 /third_party/dart-pkg/string_scanner
 /third_party/dart-pkg/vector_math
 /third_party/dart-pkg/vector_math
 /third_party/dart-pkg/yaml
 /third_party/dejavu-fonts-ttf-2.34/ttf/*.ttf
 /third_party/freetype-android/src
 /third_party/go/tool/
 /third_party/icu/
 /third_party/jsr-305/src/
 /third_party/libc++/trunk/
 /third_party/libc++abi/trunk/
 /third_party/libjpeg_turbo/
 /third_party/llvm/
 /third_party/llvm-build/
+/third_party/lss/
 /third_party/junit/src/
 /third_party/mesa/src/
 /third_party/mockito/src/
 /third_party/pdfium/
 /third_party/pyelftools/
 /third_party/pywebsocket/src/
 /third_party/requests/src/
 /third_party/robolectric/src/
 /third_party/skia/
 /third_party/smhasher/src/
@@ skipping 20 matching lines @@
 /sky/sdk/packages/mojo/pubspec.lock
 /sky/sdk/packages/sky/packages
 /sky/sdk/packages/sky/pubspec.lock
 
 # sky tools
 /sky/tools/skygo/linux64/sky_server
 /sky/tools/skygo/mac/sky_server
 
 # downloaded keyboard_native resources.
 /services/keyboard_native/res/*.png