Wrapping Context.openFileInput/openFileOutput

[romtsn]

At the moment we can't simply wrap those with SentryFileInputStream.Factory.create(openFileInput(filename), filename), because the filename has to be made up using Context.getFilesDir() or be the absolute file path, and in this case it's just a simple name. Android doesn't allow to create an instance of FIOS with just a simple name.

In other words, we'd need to change the code to SentryFileInputStream.Factory.create(openFileInput(filename), new File(context.getFilesDir(), filename)).

There are 3 options we can go with about that:

• Disable instrumentation for Context.openFileInput/Context.openFileOutput
• Use reflection and retrieve the path from the delegate. This is usually an absolute path, hence, creating a new File/FIOS will work and Android won't complain.
• Create a subclass of SentryFileInputStream in the sentry-android-core module that will make up the filename properly using Context. A problem is that we need to access Context.

[romtsn]

Let's go with option 1 first, and then ship a new version of the java SDK, meanwhile start implementing option 3