[Chromoting] Build Chromoting Host installation in two steps: (binaries & .wxs) -> .zip -> .msi.

remoting/host/win/chromoting.wxs

 <?xml version="1.0"?>
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
 
   <?define EventSourceName = "chromoting" ?>
   <?define ServiceName = "chromoting" ?>
 
   <!-- TODO(alexeypa): There strings should be localized,
        see http://crbug.com/121785 -->
   <?if $(var.Branding) ~= Chrome ?>
     <?define ChromotingHost = "Chrome Remote Desktop Host" ?>
@@ skipping 29 matching lines @@
       $sddl = "O:BAG:BAD:(A;;0x3;;;IU)(A;;0x3;;;SY)(A;;0x3;;;BA)"
       $i = ([wmiclass]"Win32_SecurityDescriptorHelper").SDDLToBinarySD($sddl).BinarySD
       -join ($i | foreach {$_.ToString("X2")})
   -->
   <?define ControllerSd = "010004805C0000006C00000000000000140000000200480003000000000014000300000001010000000000050400000000001400030000000101000000000005120000000000180003000000010200000000000520000000200200000102000000000005200000002002000001020000000000052000000020020000" ?>
 
   <?ifndef ControllerClsid ?>
     <?error ControllerClsid must be defined ?>
   <?endif?>
 
-  <?ifndef FileSource ?>
-    <?error FileSource must be defined ?>
-  <?endif?>
-
-  <?ifndef IconPath ?>
-    <?error IconPath must be defined ?>
-  <?endif?>
-
-  <?ifndef SasDllPath ?>
-    <?error SasDllPath must be defined ?>
-  <?endif?>
-
   <?ifndef Version ?>
     <?error Version must be defined ?>
   <?endif?>
 
   <Product Id="*"
            Language="1033"
            Manufacturer="$(var.Manufacturer)"
            Name="$(var.ChromotingHost)"
            UpgradeCode="$(var.UpgradeCode)"
            Version="$(var.Version)">
@@ skipping 32 matching lines @@
     </Upgrade>
 
     <Condition Message="A later version of [ProductName] is already installed. Setup will now exit.">
       NOT NEWERVERSIONDETECTED
     </Condition>
 
     <Media Id="1" Cabinet="chromoting.cab" EmbedCab="yes"/>
 
     <Directory Id="TARGETDIR" Name="SourceDir">
       <Directory Id="ProgramFilesFolder">
-        <?ifdef OfficialBuild ?>
+        <?if $(var.OfficialBuild) != 0 ?>
           <Directory Id="program_files_google" Name="Google">
             <Directory Id="chromoting" Name="Chrome Remote Desktop">
               <Directory Id="binaries" Name="$(var.Version)"/>
             </Directory>
           </Directory>
         <?else?>
           <Directory Id="chromoting" Name="Chromoting">
             <Directory Id="binaries" Name="$(var.Version)"/>
           </Directory>
         <?endif?>
       </Directory>
       <Directory Id="CommonAppDataFolder">
-        <?ifdef OfficialBuild ?>
+        <?if $(var.OfficialBuild) != 0 ?>
           <Directory Id="common_app_data_google" Name="Google">
             <Directory Id="config_files" Name="Chrome Remote Desktop"/>
           </Directory>
         <?else?>
           <Directory Id="config_files" Name="Chromoting"/>
         <?endif?>
       </Directory>
     </Directory>
 
-    <DirectoryRef Id="binaries" FileSource="$(var.FileSource)">
+    <DirectoryRef Id="binaries">
       <Component Id="sas" Guid="*">
         <File Id="sas.dll"
               DiskId="1"
               Name="sas.dll"
-              Source="$(var.SasDllPath)"
               Vital="yes"/>
       </Component>
 
       <?if $(var.RemotingMultiProcess) != 0 ?>
         <Component Id="remoting_desktop" Guid="*">
           <File Id="remoting_desktop.exe"
                 DiskId="1"
                 KeyPath="yes"
                 Name="remoting_desktop.exe"
                 Vital="yes"/>
@@ skipping 42 matching lines @@
 
         <fire:FirewallException xmlns:fire="http://schemas.microsoft.com/wix/FirewallExtension"
                                 Id="me2me_firewall_exception"
                                 IgnoreFailure="yes"
                                 Name="$(var.FirewallName)"
                                 Profile="all"
                                 Program="[#remoting_me2me_host.exe]"
                                 Scope="any" />
       </Component>
 
-      <?ifdef OfficialBuild ?>
+      <?if $(var.OfficialBuild) != 0 ?>
         <Component Id="omaha_registration" Guid="*">
           <RegistryKey Id="omaha_client_key"
                        Root="HKLM"
                        Key="SOFTWARE\Google\Update\Clients\$(var.OmahaAppid)"
                        Action="create">
             <RegistryValue Type="string"
                            Name="pv"
                            Value="$(var.Version)"/>
 
             <RegistryValue Type="string"
@@ skipping 193 matching lines @@
     <CustomAction Id="set_service_display_name_xp"
                   Property="chromoting_service_display_name"
                   Value="$(var.ChromotingServiceName)" />
     <CustomAction Id="set_service_description_xp"
                   Property="chromoting_service_description"
                   Value="$(var.ChromotingServiceDescription)" />
 
     <UIRef Id="WixUI_ErrorProgressText" />
 
     <Feature Id="chromoting_host" Level="1" Title="$(var.ChromotingHost)">
-      <?ifdef OfficialBuild ?>
+      <?if $(var.OfficialBuild) != 0 ?>
         <ComponentRef Id="omaha_registration"/>
       <?endif?>
       <ComponentRef Id="remoting_controller"/>
       <ComponentRef Id="remoting_daemon"/>
       <?if $(var.RemotingMultiProcess) != 0 ?>
         <ComponentRef Id="remoting_desktop"/>
       <?endif?>
       <ComponentRef Id="remoting_host"/>
       <ComponentRef Id="sas"/>
     </Feature>
 
     <!-- Set the icon shown in Add/Remove Programs. -->
-    <Icon Id="chromoting.ico" SourceFile="$(var.IconPath)"/>
+    <Icon Id="chromoting.ico" SourceFile="chromoting.ico"/>
     <Property Id="ARPPRODUCTICON" Value="chromoting.ico" />
 
     <InstallExecuteSequence>
       <Custom Action="query_auto_start_service" Before="InstallInitialize"/>
       <Custom Action="set_auto_start_service" After="StartServices">
         <![CDATA[NOT REMOVE AND (auto_start_service = "#2")]]>
       </Custom>
 
       <!-- Set the serivce name and description -->
       <Custom Action="set_service_display_name_xp" Before="InstallInitialize">
         <![CDATA[VersionNT < 600]]>
       </Custom>
       <Custom Action="set_service_description_xp" Before="InstallInitialize">
         <![CDATA[VersionNT < 600]]>
       </Custom>
       <Custom Action="set_service_display_name" Before="InstallInitialize">
         <![CDATA[VersionNT >= 600]]>
       </Custom>
       <Custom Action="set_service_description" Before="InstallInitialize">
         <![CDATA[VersionNT >= 600]]>
       </Custom>
 
       <!-- Schedule RemoveExistingProducts before installing any files.
            See http://msdn.microsoft.com/en-us/library/aa371197.aspx. -->
       <RemoveExistingProducts After="InstallInitialize" />
     </InstallExecuteSequence>
   </Product>
 </Wix>