3 Crash is a [layered component] to enable it to be shared cleanly on iOS.
5 [layered component]: (https://sites.google.com/a/chromium.org/dev/developers/design-documents/layered-components-design)
11 iOS crash reporting uses Breakpad. Some [code changes] are necessary in order
12 to enable crash reporting in local debug builds.
14 [code changes]: http://crrev.com/c/1570168