[Windows] Move to Visual Studio 2019 (flutter#37013)

Use Visual Studio 2019 to build the engine.

This is a requirement to roll ANGLE as it is affected by an STL bug if built using Visual Studio 2017: [angleproject#7693](https://bugs.chromium.org/p/angleproject/issues/detail?id=7693)

Depends on: flutter/buildroot#643

Part of: flutter/flutter#110948

Author: loic-sharma

DEPS

@@ -113,7 +113,7 @@ allowed_hosts = [
 ]
 
 deps = {
-  'src': 'https://github.com/flutter/buildroot.git' + '@' + 'a680bb1c63e6ae1831cb672db029e9842ec4b905',
+  'src': 'https://github.com/flutter/buildroot.git' + '@' + 'ad96f00615dc306c22cc09d433eee50392f8033c',
 
    # Fuchsia compatibility
    #

shell/platform/windows/window_proc_delegate_manager_unittests.cc

@@ -10,11 +10,18 @@ namespace testing {
 
 namespace {
 
+#ifdef _WIN32
+#define FLUTTER_NOINLINE __declspec(noinline)
+#else
+#define FLUTTER_NOINLINE __attribute__((noinline))
+#endif
+
 using TestWindowProcDelegate = std::function<std::optional<
     LRESULT>(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)>;
 
 // A FlutterDesktopWindowProcCallback that forwards to a std::function provided
 // as user_data.
+FLUTTER_NOINLINE
 bool TestWindowProcCallback(HWND hwnd,
                             UINT message,
                             WPARAM wparam,

tools/dia_dll.py

@@ -44,7 +44,12 @@ def GetDiaDll():
   msvs_version = vs_toolchain.GetVisualStudioVersion()
 
   if bool(int(os.environ.get('DEPOT_TOOLS_WIN_TOOLCHAIN', '1'))):
-    dia_path = os.path.join(win_sdk_dir, '..', 'DIA SDK', 'bin', 'amd64')
+    # Depot tools .zip layout:
+    # \- DIA SDK
+    # \- Windows Kits
+    #   \- 10
+    #     \- ... # Location of `DEPOT_TOOLS_WIN_TOOLCHAIN`
+    dia_path = os.path.join(win_sdk_dir, '..', '..', 'DIA SDK', 'bin', 'amd64')
   else:
     if 'GYP_MSVS_OVERRIDE_PATH' in os.environ:
       vs_path = os.environ['GYP_MSVS_OVERRIDE_PATH']