Revert of Remove NPAPI plugin from chromoting webapp.

remoting/remoting.gyp

Index: remoting/remoting.gyp
diff --git a/remoting/remoting.gyp b/remoting/remoting.gyp
index f1979164b25d13dce582526ef59690c8e2a6d707..0e2ffc8c7285561eebf48928edd38f09904e8ee5 100644
--- a/remoting/remoting.gyp
+++ b/remoting/remoting.gyp
@@ -29,12 +29,41 @@
 
     'webapp_locale_dir': '<(SHARED_INTERMEDIATE_DIR)/remoting/webapp/_locales',
 
+    'host_plugin_mime_type': 'application/vnd.chromium.remoting-host',
+
     'conditions': [
       ['OS=="mac"', {
         'mac_bundle_id': '<!(python <(version_py_path) -f <(branding_path) -t "@MAC_BUNDLE_ID@")',
         'mac_creator': '<!(python <(version_py_path) -f <(branding_path) -t "@MAC_CREATOR@")',
+        'host_plugin_extension': 'plugin',
+        'host_plugin_prefix': '',
+      }],
+      ['os_posix == 1 and OS != "mac" and target_arch == "ia32"', {
+        # linux 32 bit
+        'host_plugin_extension': 'ia32.so',
+        'host_plugin_prefix': 'lib',
+      }],
+      ['os_posix == 1 and OS != "mac" and target_arch == "x64"', {
+        # linux 64 bit
+        'host_plugin_extension': 'x64.so',
+        'host_plugin_prefix': 'lib',
+      }],
+      ['os_posix == 1 and OS != "mac" and target_arch == "arm"', {
+        'host_plugin_extension': 'arm.so',
+        'host_plugin_prefix': 'lib',
+      }],
+      ['os_posix == 1 and OS != "mac" and target_arch == "arm64"', {
+        'host_plugin_extension': 'arm64.so',
+        'host_plugin_prefix': 'lib',
+      }],
+      ['os_posix == 1 and OS != "mac" and target_arch == "mipsel"', {
+        'host_plugin_extension': 'mipsel.so',
+        'host_plugin_prefix': 'lib',
       }],
       ['OS=="win"', {
+        'host_plugin_extension': 'dll',
+        'host_plugin_prefix': '',
+
         # Each CLSID is a hash of the current version string salted with an
         # arbitrary GUID. This ensures that the newly installed COM classes will
         # be used during/after upgrade even if there are old instances running
@@ -83,8 +112,9 @@
       'BINARY_CORE=1',
       'BINARY_DESKTOP=2',
       'BINARY_HOST_ME2ME=3',
-      'BINARY_NATIVE_MESSAGING_HOST=4',
-      'BINARY_REMOTE_ASSISTANCE_HOST=5',
+      'BINARY_HOST_PLUGIN=4',
+      'BINARY_NATIVE_MESSAGING_HOST=5',
+      'BINARY_REMOTE_ASSISTANCE_HOST=6',
     ],
     'include_dirs': [
       '..',  # Root of Chrome checkout
@@ -161,6 +191,7 @@
           'host/disconnect_window_mac.mm',
           'host/installer/mac/uninstaller/remoting_uninstaller-InfoPlist.strings.jinja2',
           'host/mac/me2me_preference_pane-InfoPlist.strings.jinja2',
+          'host/plugin/host_plugin-InfoPlist.strings.jinja2',
           'host/win/core.rc.jinja2',
           'host/win/host_messages.mc.jinja2',
           'host/win/version.rc.jinja2',