Stop including flash in the archive on Windows.

chrome/BUILD.gn

 # Copyright 2014 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/buildflag_header.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ skipping 239 matching lines @@
         deps += [ "//chrome/app/mash" ]
         data_deps += [ "//chrome/app:mojo_manifests" ]
       }
     }
 
     # These files are used by the installer so we need a public dep.
     public_deps += [
       ":packed_extra_resources",
       ":packed_resources",
     ]
-    deps += [
-      "//components/startup_metric_utils/browser:lib",
+    deps += [ "//components/startup_metric_utils/browser:lib" ]
 
-      # Precompiled plugins that need to get copied to the output directory.
-      # On Mac, internal plugins go inside the framework, so these
-      # dependencies are on chrome.dll.
-      "//third_party/adobe/flash:flapper_binaries",
-    ]
+    # Precompiled plugins that need to get copied to the output directory.
+    # On Mac, internal plugins go inside the framework, so these
+    # dependencies are on chrome.dll. On Windows, these are not bundled.

[Nico, 2016/08/23 17:19:47]

Aren't they not bundled now on Mac as well?

+    if (!is_win) {
+      deps += [ "//third_party/adobe/flash:flapper_binaries" ]
+    }
 
     data_deps += [ "//third_party/widevine/cdm:widevinecdmadapter" ]
 
     if (is_multi_dll_chrome) {
       defines += [ "CHROME_MULTIPLE_DLL" ]
       data_deps += [ ":chrome_child" ]
     }
   }
 }  # !is_android && !is_mac
 
@@ skipping 1490 matching lines @@
       "//chrome/app/theme/$branding_path_component/product_logo_48.png",
       "//chrome/tools/build/linux/chrome-wrapper",
       "//third_party/xdg-utils/scripts/xdg-mime",
       "//third_party/xdg-utils/scripts/xdg-settings",
     ]
     outputs = [
       "$root_out_dir/{{source_file_part}}",
     ]
   }
 }