chromium 编译源码里面的单一模块 测试用例

当查看chromium源码，发现在viz下有个demo可执行源码。位于目录：

src\components\viz\demo

打开此目录下的 BUILD.gn ，找到 gn 的target：

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1	executable("viz_demo") <br><br>输入如下命令编译即可：<br><br>

e:\dev\chromium\src>ninja -C out/default viz_demo
运行：
e:\dev\chromium\src>out\Default\viz_demo.exe

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1	<br>附上BUILD.gn ：

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# Copyright 2019 The Chromium Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file.   import("//build/config/ui.gni")   static_library("client") {   output_name = "demo_client"     sources = [     "client/demo_client.cc",     "client/demo_client.h",   ]     deps = [     "//components/viz/common",     "//mojo/public/cpp/bindings",     "//services/viz/public/mojom",   ] }   static_library("host") {   output_name = "demo_host"   sources = [     "host/demo_host.cc",     "host/demo_host.h",   ]     deps = [     ":client",     "//components/viz/common",     "//components/viz/host",     "//mojo/public/cpp/system",     "//services/viz/privileged/mojom",   ] }   static_library("service") {   output_name = "demo_service"   sources = [     "service/demo_service.cc",     "service/demo_service.h",   ]     deps = [     "//components/viz/common",     "//components/viz/service/main",     "//mojo/public/cpp/system",     "//services/viz/privileged/mojom",   ] }   executable("viz_demo") {   sources = [ "demo_main.cc" ]     deps = [     "//base",     "//base:base_static",     "//base:i18n",     "//build/win:default_exe_manifest",     "//components/viz/demo:host",     "//components/viz/demo:service",     "//components/viz/service",     "//components/viz/service/main",     "//mojo/core/embedder",     "//skia",     "//ui/events",     "//ui/events/platform",     "//ui/platform_window",   ]     if (use_x11) {     deps += [       "//ui/events/platform/x11",       "//ui/platform_window/x11",     ]   }     if (is_win) {     deps += [ "//ui/platform_window/win" ]   } }