Add --output-dir flag to third_party/android_platform/development/scripts/stack

third_party/android_platform/README.chromium

 Name: Android Platform engineering tools
 Short Name: android platform development
 URL: https://android.googlesource.com/platform/development
 Version: unknown
 Date: 2014/05/02
 Revision: 1b10ec4
 License: Apache 2.0
 License File: NOT_SHIPPED
 Security Critical: no
 
 Description:
 Android Platform engineering tools, specifically stack symbolization scripts
 and a jar containing the AOSP framework to compile the Android WebView
 glue layer against. The AOSP framework is built from the Android release tag
 after which it is named, and the jar can be built by invoking make on the
 android_system_stubs target.
 
 Also includes a ported copy of the Android relocation packing tool source,
 along with the files required to build it in the chromium tree.
 
 Local Modifications:
 Only picked the few scripts needed by chrome.
 
 The scripts have been modified to better suit Chromium development. Changes
 include, but are not limited to, the following:
 Added memoization of addr2line and objdump.
 Added option to change the amount of symbolization done.
-Updated output directories to use environment variable.
+Updated output directories to be set by environment variable or --flags
 When calling addr2line, check the symbol is a file that looks like it contains
     symbols.
 Added support for parsing LOG(FATAL) and DCHECK errors and their
     stack traces, as emitted by src/base/debug/stack_trace_android.cc
 Added support for finding symbols when library is loaded directly from the APK.
 Changed the toolchain to remove references to 4.6 toolchains.
 Added support for arch=x64 as an alias to arch=x86_64
 Added debug logging and --verbose parameter.
 Used fast ELF symbolizer for symbols.py and tombstones
 Used multiprocessing to pre-process logcat before symbolizing it
 Added code address adjustment for the debuggerd output from pre-M Android
     where relocations are packed.
 
 Android relocation packing tool details:
     Copy sources from AOSP bionic/tools/relocation_packer
     Remove scripts that regenerate golden test data (not relevant here)
     Create a nativehelper/ScopedFd.h to satisfy inclusion from main.cc
     Create gyp build
     Create gn build (currently packer only; no unit tests)
     List of bionic changes currently included:
       Refresh: https://android-review.googlesource.com/#/c/143878/
       Refresh: https://android-review.googlesource.com/#/c/147620/
                https://android-review.googlesource.com/#/c/147745/
                https://android-review.googlesource.com/#/c/148073/
       Refresh: https://android-review.googlesource.com/#/c/151901/
                https://android-review.googlesource.com/#/c/149300/
                https://android-review.googlesource.com/#/c/148822/
                https://android-review.googlesource.com/#/c/148492/
                https://android-review.googlesource.com/#/c/148175/