Sync bookmark app icon urls and sizes, and download icons for new apps.

chrome/common/extensions/chrome_manifest_handlers.cc

Index: chrome/common/extensions/chrome_manifest_handlers.cc
diff --git a/chrome/common/extensions/chrome_manifest_handlers.cc b/chrome/common/extensions/chrome_manifest_handlers.cc
index 59eebc718ea691a2062aa51a2c709119434512df..4aa81c75e653ffc20c1be2787e1ee23fe0f62f34 100644
--- a/chrome/common/extensions/chrome_manifest_handlers.cc
+++ b/chrome/common/extensions/chrome_manifest_handlers.cc
@@ -25,6 +25,7 @@
 #include "chrome/common/extensions/manifest_handlers/content_scripts_handler.h"
 #include "chrome/common/extensions/manifest_handlers/copresence_manifest.h"
 #include "chrome/common/extensions/manifest_handlers/extension_action_handler.h"
+#include "chrome/common/extensions/manifest_handlers/linked_app_icons.h"
 #include "chrome/common/extensions/manifest_handlers/minimum_chrome_version_checker.h"
 #include "chrome/common/extensions/manifest_handlers/settings_overrides_handler.h"
 #include "chrome/common/extensions/manifest_handlers/theme_handler.h"
@@ -52,6 +53,7 @@ void RegisterChromeManifestHandlers() {
 #if defined(OS_CHROMEOS)
   (new InputComponentsHandler)->Register();
 #endif
+  (new LinkedAppIconsHandler)->Register();
   (new MinimumChromeVersionChecker)->Register();
   (new OmniboxHandler)->Register();
   (new OptionsPageManifestHandler)->Register();