Infrastructure to improve app mode stub <-> Chrome main communication.

chrome/common/mac/app_mode_common.h

Index: chrome/common/mac/app_mode_common.h
diff --git a/chrome/common/mac/app_mode_common.h b/chrome/common/mac/app_mode_common.h
index f0f3ad2088647f60e9b9d7ed4ba134a09392b8bf..f3a75e992a2a21771cbe793dc455b9f6c7b97088 100644
--- a/chrome/common/mac/app_mode_common.h
+++ b/chrome/common/mac/app_mode_common.h
@@ -16,6 +16,11 @@
 
 namespace app_mode {
 
+struct ChromeAppModeInfo;
+
+void SetAppModeInfo(const ChromeAppModeInfo* info);
+const ChromeAppModeInfo* AppModeInfo();
+
 // The key under which the browser's bundle ID will be stored in the
 // app mode launcher bundle's Info.plist.
 extern NSString* const kBrowserBundleIDKey;