Merge pull request #14 from jchen10/master

Fixed build errors in unit_tests and content_shell_apk
chromium64.py: Adjust patches as stage 2 and 3 patches are merged
x64-upstream: Rebase to @255909
acr: Add script for upstream Chromium + upstream AOSP
Update media 164398 and pthread(170590,170591) patches
.zshrc: Change the default directory
.zshrc: Fix the issue if zsh-syntax-highlighting doesnt exist
sublime: Change settings
install.py: Refactor to make it better
webcatch: Support webview build
webcatch: Different user name for slave machine is supported
install.py: Add step to install jdk
x64-upstream: Rebase to @258213
webcatch: Change the way to use envsetup.sh
.zshrc: unalias mv and remove git_prompt_string
x64-upstream: Rebase to 259174
x64-upstream: Update status of patches
install.py: Add package libicu-dev
x64-upstream: Rebase to r259808

v8 patches have been synced by upstream, so the patch is removed.
fix webaudio for android x64