Make missing or misspelled DLLs a build-time failure

chrome/tools/build/win/create_installer_archive.py

Index: chrome/tools/build/win/create_installer_archive.py
diff --git a/chrome/tools/build/win/create_installer_archive.py b/chrome/tools/build/win/create_installer_archive.py
index 313af85660b0d4fc6c8a33fadaa5c164c9e3efa2..78a621aa83014f48b2b0b9baddceb7e719e84f4d 100755
--- a/chrome/tools/build/win/create_installer_archive.py
+++ b/chrome/tools/build/win/create_installer_archive.py
@@ -519,6 +519,9 @@ def DoComponentBuildTasks(staging_dir, build_dir, target_arch, current_version):
   for setup_component_dll_glob in setup_component_dll_globs:
     setup_component_dlls = glob.glob(os.path.join(build_dir,
                                                   setup_component_dll_glob))
+    if len(setup_component_dlls) == 0:
+      raise Exception('No matching DLL found for "%s" pattern.' %

[robertshield, 2016/03/29 03:03:29]

optional nit: this is likely to show up for a dev building mini_installer after
the dependencies are altered. An easier to grok error message might be

"Missing expected DLL for component build mini_installer: %s"

+                      setup_component_dll_glob)
     for setup_component_dll in setup_component_dlls:
       g_archive_inputs.append(setup_component_dll)
       shutil.copy(setup_component_dll, installer_dir)