Move app_installer into chromium.

chrome/installer/launcher_support/chrome_launcher_support.h

Index: chrome/installer/launcher_support/chrome_launcher_support.h
diff --git a/chrome/installer/launcher_support/chrome_launcher_support.h b/chrome/installer/launcher_support/chrome_launcher_support.h
index 9cf14792b76978d38273f45613ffff60b2ee4cac..c9df631e495f0e15720af17495683d059f3f1cb2 100644
--- a/chrome/installer/launcher_support/chrome_launcher_support.h
+++ b/chrome/installer/launcher_support/chrome_launcher_support.h
@@ -28,6 +28,12 @@ base::FilePath GetChromePathForInstallationLevel(InstallationLevel level);
 // The file path returned (if any) is guaranteed to exist.
 base::FilePath GetAnyChromePath();
 
+// Returns the path to an installed SxS chrome.exe, or an empty path. Prefers a
+// user-level installation to a system-level installation. Uses Omaha client
+// state to identify a Chrome Canary installation location.
+// The file path returned (if any) is guaranteed to exist.
+base::FilePath GetAnyChromeSxSPath();
+
 }  // namespace chrome_launcher_support
 
 #endif  // CHROME_INSTALLER_LAUNCHER_SUPPORT_CHROME_LAUNCHER_SUPPORT_H_