[Android] Prepare build/android/ for catapult+devil.

build/android/symbolize.py

Index: build/android/symbolize.py
diff --git a/build/android/symbolize.py b/build/android/symbolize.py
index acd4e5166ae802d439888bc6bca69dc6284d828c..d5f6d7ca74bd88d70c78d38ccc083bc0780f014f 100755
--- a/build/android/symbolize.py
+++ b/build/android/symbolize.py
@@ -10,17 +10,16 @@ Sample usage:
   adb logcat chromium:V | symbolize.py
 """
 
-import os
 import re
 import sys
 
-from pylib import constants
+from pylib.constants import host_paths
 
 # Uses symbol.py from third_party/android_platform, not python's.
-sys.path.insert(0,
-                os.path.join(constants.DIR_SOURCE_ROOT,
-                            'third_party/android_platform/development/scripts'))
-import symbol
+with host_paths.SysPath(
+    host_paths.ANDROID_PLATFORM_DEVELOPMENT_SCRIPTS_PATH,
+    position=0):
+  import symbol
 
 # Sample output from base/debug/stack_trace_android.cc
 #00 0x693cd34f /path/to/some/libfoo.so+0x0007434f