Add GetAnyChromeSxSPath.

chrome/installer/launcher_support/chrome_launcher_support.cc

Index: chrome/installer/launcher_support/chrome_launcher_support.cc
diff --git a/chrome/installer/launcher_support/chrome_launcher_support.cc b/chrome/installer/launcher_support/chrome_launcher_support.cc
index c28bf9977fe403abb101b0da3718902fee2798b4..43dc53803c200be34933e862739de5f04bb4f2a8 100644
--- a/chrome/installer/launcher_support/chrome_launcher_support.cc
+++ b/chrome/installer/launcher_support/chrome_launcher_support.cc
@@ -34,6 +34,7 @@ const wchar_t kAppHostAppId[] = L"{FDA71E6F-AC4C-4a00-8B70-9958A68906BF}";
 
 // Copied from chrome_appid.cc.
 const wchar_t kBinariesAppGuid[] = L"{4DC8B4CA-1BDA-483e-B5FA-D3C12E15B62D}";
+const wchar_t kSxSBrowserAppGuid[] = L"{4ea16ac7-fd5a-47c3-875b-dbf4a2008c20}";

[grt (UTC plus 2), 2014/03/18 13:51:06]

nit: document this as "Coped from google_chrome_sxs_distribution.cc." since
that's the authoritative definition of the value.

[jackhou1, 2014/03/18 23:39:10]

Done.

 
 // Copied from google_chrome_distribution.cc.
 const wchar_t kBrowserAppGuid[] = L"{8A69D345-D564-463c-AFF1-A69D9E530F96}";
@@ -170,6 +171,11 @@ base::FilePath GetAppHostPathForInstallationLevel(InstallationLevel level) {
       GetSetupExeFromRegistry(level, kAppHostAppId), kChromeAppHostExe);
 }
 
+base::FilePath GetChromeSxSPathForInstallationLevel(InstallationLevel level) {
+  return FindExeRelativeToSetupExe(
+      GetSetupExeFromRegistry(level, kSxSBrowserAppGuid), kChromeExe);
+}
+
 base::FilePath GetAnyChromePath() {
   base::FilePath chrome_path;
   if (chrome_path.empty())
@@ -190,6 +196,15 @@ base::FilePath GetAnyAppHostPath() {
   return app_host_path;
 }
 
+base::FilePath GetAnyChromeSxSPath() {
+  base::FilePath path;
+  if (path.empty())
+    path = GetChromeSxSPathForInstallationLevel(SYSTEM_LEVEL_INSTALLATION);
+  if (path.empty())
+    path = GetChromeSxSPathForInstallationLevel(USER_LEVEL_INSTALLATION);
+  return path;
+}
+
 bool IsAppHostPresent() {
   base::FilePath app_host_exe = GetAnyAppHostPath();
   return !app_host_exe.empty();