Move ProgID methods from BrowserDistribution into install_static.

chrome/install_static/chromium_install_modes.cc

 // Copyright 2016 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.
 
 // Brand-specific constants and install modes for Chromium.
 
 #include <stdlib.h>
 
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/install_static/install_modes.h"
@@ skipping 15 matching lines @@
     // clang-format off
     // The primary (and only) install mode for Chromium.
     {
         sizeof(kInstallModes[0]),
         CHROMIUM_INDEX,
         "",   // No install switch for the primary install mode.
         L"",  // Empty install_suffix for the primary install mode.
         L"",  // No logo suffix for the primary install mode.
         L"",  // Empty app_guid since no integraion with Google Update.
         L"Chromium",  // A distinct base_app_id.
+        L"ChromiumHTM",  // ProgID prefix.
+        L"Chromium HTML Document",  // ProgID description.
         L"",  // Empty default channel name as above.
         ChannelStrategy::UNSUPPORTED,
         true,  // Supports system-level installs.
         true,  // Supported multi-install.
         IDR_MAINFRAME,
     },
     // clang-format on
 };
 
 static_assert(_countof(kInstallModes) == NUM_INSTALL_MODES,
               "Imbalance between kInstallModes and InstallConstantIndex");
 
 }  // namespace install_static