chromium

##Get the code

check out and install the depot_tools package.
create chromium dir and clone the repository to src folder:

git clone https://github.com/brave/chromium.git src

##Configure your build (You can only use a Linux build machine for Android builds)

create a a file called chromium.gyp_env with the following contents:

/chromium$ echo "{ 'GYP_DEFINES': 'OS=android target_arch=arm', }" > chromium.gyp_env
once chromium.gyp_env is ready, you need to run the following command to update projects from gyp files. You may need to run this again when you have added new files, updated gyp files, or sync'ed your repository:

/chromium$ gclient runhooks

create a build directory and set the build flags with:

/chromium/src$ gn args out/Default

This command will bring up your editor with the GN build args (re-run gn args on that directory to edit the flags in the future. ). In this file add:

target_os = "android"
target_cpu = "arm"  # (default)
is_debug = true  # (default)

is_component_build = true
is_clang = true
symbol_level = 1  # Faster build with fewer symbols. -g1 rather than -g2
enable_incremental_javac = true  # Much faster; experimental

prepare the environment:

/chromium/src$ . build/android/envsetup.sh

##Build the full browser

Note: When adding new resource files or java files in gyp builds, you need to run 'gclient runhooks' again to get them in the build.

build browser:

/chromium/src$ ninja -C out/Default chrome_public_apk
deploy it to your Android device:

/chromium/src$ build/android/adb_install_apk.py out/Default/apks/Brave.apk

##Debugging

follow that link for the general debug process;
follow that link to configure Eclipse IDE.