flutter pub run pigeon --input pigeons/android_webview.dart --cpp_header_out messages.g.h --cpp_source_out messages.g.cc --cpp_namespace plugin_webview_flutter

Steps to test plugin

Follow guide at https://bitbucket.org/chromiumembedded/cef/wiki/MasterBuildQuickStart.md to build chromium/cef a. Use the following GN_DEFINES:

export GN_DEFINES="use_sysroot=true use_allocator=none is_cfi=false use_thin_lto=false use_ozone=true ozone_auto_platforms=false ozone_platform_headless=true ozone_platform_wayland=true ozone_platform_x11=false use_xkbcommon=true use_gtk=false angle_use_wayland=false angle_enable_gl=false"

b. For debugging, may also add symbol_level=2 is_debug=true

TODO: Add tips/patches for building on Ubuntu 20

c. Apply the following patch from webiew_flutter_view/patches/chromium_cef directory:
```
 - 0001_enable_gl_without_angle.patch
```
Note: During the build step, only cefsimple and chrome_sandbox are necessary targets
Once built, there is a built-in python script to generate a binary distribution

python3 {chromium src dir}/cef/tools/make_distrib.py --output-dir=../binary_distrib/ --no-docs --ninja-build --x64-build --ozone
Copy this binary distribution folder to {ivi-homescreen-plugins dir}/plugins/webview_flutter_plugin/third_party
Within the copied binary distribution, delete the tests/ directory, as well as the packaged Angle libraries in the debug and release directories: libEGL.so, libGLESv2.so, libvk_swiftshader.so, libvulkan.so.1
[Temporary] Copy all files in {binary_distrib}/Resources to {binary_distrib}/Debug and {binary_distrib}/Release
Initialize git repository in the binary distribution folder: git init git add . git commit -s -m "Initial Commit"
Apply the following patches from workspace_automation: {workspace_automation dir}/patches/cef-prebuilt/0001-clang-build.patch {workspace_automation dir}/patches/cef-prebuilt/0002-cef-subprocess.patch {workspace_automation dir}/patches/cef-prebuilt/0003-add-dylib.patch {workspace_automation dir}/patches/cef-prebuilt/0004-add-dylib-header.patch {workspace_automation dir}/patches/cef-prebuilt/0005-include_dylib.patch TODO: more patches
If libwayland-client version is less than 1.23.0, download/compile/install libwayland_client 1.23.0
Set environment variable for root directory of CEF binary distribution: export CEF_ROOT={ivi-homescreen-plugins dir}/plugins/webview_flutter_plugin/third_party/{cef_binary_distrib}
Configure ivi-homescreen CMake with the following additional arguments: -DBUILD_PLUGIN_WEBVIEW_FLUTTER_VIEW=ON -DCEF_ROOT=${CEF_ROOT}
Build and install all targets (includes webview subprocess): ninja all install
Source workspace_automation setup script, and run test package: . {workspace_automation root}/setup_env.sh cd {workspace_automation root}/app/tcna-packages/packages/webview/webview_flutter_linux/example LD_PRELOAD={CEF binary distribution dir}/{build type}/libcef.so LD_PRELOAD="/usr/lib/x86_64-linux-gnu/;{path to libwayland-client.so.0.23.0} flutter run -d desktop-homescreen