If Chrome Binaries version > App Host version, then update App Host.

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 a67e53374ab60c277f964d62fee7081afcc7f61d..1051a244586e0e337bf2d23253e99904492080f2 100644
--- a/chrome/installer/launcher_support/chrome_launcher_support.h
+++ b/chrome/installer/launcher_support/chrome_launcher_support.h
@@ -14,6 +14,16 @@ enum InstallationLevel {
   SYSTEM_LEVEL_INSTALLATION
 };
 
+// Returns the path to an existing setup.exe at the specified level, if it can
+// be found via Omaha client state.
+FilePath GetSetupExeForInstallationLevel(InstallationLevel level);
+
+// Returns the path to an installed chrome.exe at the specified level, if it can
+// be found via Omaha client state. Prefers the installer from a multi-install,
+// but may also return that of a single-install of Chrome if no multi-install
+// exists.
+FilePath GetChromePathForInstallationLevel(InstallationLevel level);
+
 // Returns the path to an installed chrome.exe, or an empty path. Prefers a
 // system-level installation to a user-level installation. Uses Omaha client
 // state to identify a Chrome installation location.
@@ -22,10 +32,6 @@ enum InstallationLevel {
 // The file path returned (if any) is guaranteed to exist.
 FilePath GetAnyChromePath();
 
-// Returns the path to an installed chrome.exe at the specified level, if it can
-// be found via Omaha client state.
-FilePath GetChromePathForInstallationLevel(InstallationLevel level);
-
 }  // namespace chrome_launcher_support
 
 #endif  // CHROME_INSTALLER_LAUNCHER_SUPPORT_CHROME_LAUNCHER_SUPPORT_H_