Add static analysis support to Win Clang builds

build/toolchain/win/BUILD.gn

 # Copyright (c) 2013 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/clang/clang.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/win/visual_studio_version.gni")
+import("//build/toolchain/clang_static_analyzer.gni")
 import("//build/toolchain/goma.gni")
 import("//build/toolchain/toolchain.gni")
 
 # Should only be running on Windows.
 assert(is_win)
 
 # Setup the Visual Studio state.
 #
 # Its arguments are the VS path and the compiler wrapper tool. It will write
 # "environment.x86" and "environment.x64" to the build directory and return a
@@ skipping 69 matching lines @@
     if (toolchain_uses_clang && host_os != "win") {
       # This toolchain definition uses response files for compilations.  GN uses
       # the quoting rules of the host OS, while clang-cl always defaults to
       # cmd.exe quoting rules for parsing response files.  Tell clang-cl to use
       # POSIX quoting rules, so it can understand what GN generates.
       cl = "${invoker.cl} --rsp-quoting=posix"
     } else {
       cl = invoker.cl
     }
 
+    if (toolchain_uses_clang && use_clang_static_analyzer) {
+      analyzer_prefix =
+          "$python_path " +
+          rebase_path("//build/toolchain/clang_static_analyzer_wrapper.py",
+                      root_build_dir) + " --mode=cl"
+      cl = "${analyzer_prefix} ${cl}"
+    }
+
     if (use_lld) {
       if (host_os == "win") {
         lld_link = "lld-link.exe"
       } else {
         lld_link = "lld-link"
       }
       prefix = rebase_path("$clang_base_path/bin", root_build_dir)
 
       # lld-link includes a replacement for lib.exe that can produce thin
       # archives and understands bitcode (for lto builds).
@@ skipping 322 matching lines @@
   msvc_toolchain("winrt_x64") {
     environment = "environment.winrt_x64"
     cl = "${goma_prefix}\"${vc_bin_dir}/cl.exe\""
 
     toolchain_args = {
       is_clang = false
       current_cpu = "x64"
     }
   }
 }