webmark: Change browsermark timeout from 600 to 1800
webmark: Fix an issue of mismatch result file name
webmark: Assign a single baseline file to each device
util.py: Add global servers and update server_webcatch
util.py: Update chromium_andorid_info

Add 'CHROMIUM_ANDROID_INFO_INDEX_ISKNOWN' index
Add activity for those known modules
Update logic of getting 'androidActivity' in get_capabilities
util.py: Add 3 android common functions

android_install_module: adb install module via module_path
android_run_module: run module with url via module_name
android_gdb_module: debug module via GDB
chrome-android.py: Add support for local development

local_setup: setup local dirs and get source code from server
local_build: build chrome for android locally
debug: debug Chromium.apk with GDB
webmark: Add baseline dir