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

extensions/common/manifest_constants.h

Index: extensions/common/manifest_constants.h
diff --git a/extensions/common/manifest_constants.h b/extensions/common/manifest_constants.h
index a6a9c6d9270b9a361bf14420d9bbecbf28583fd7..fa587015a3808cfc6a40800e3447c8cd334e6986 100644
--- a/extensions/common/manifest_constants.h
+++ b/extensions/common/manifest_constants.h
@@ -82,6 +82,9 @@ extern const char kLaunchLocalPath[];
 extern const char kLaunchWebURL[];
 extern const char kLaunchWidth[];
 extern const char kLayouts[];
+extern const char kLinkedAppIcons[];
+extern const char kLinkedAppIconURL[];
+extern const char kLinkedAppIconSize[];
 extern const char kManifestVersion[];
 extern const char kMatchAboutBlank[];
 extern const char kMatches[];
@@ -352,6 +355,10 @@ extern const char kInvalidLauncherPagePage[];
 extern const char kInvalidLaunchContainer[];
 extern const char kInvalidLaunchValue[];
 extern const char kInvalidLaunchValueContainer[];
+extern const char kInvalidLinkedAppIcon[];
+extern const char kInvalidLinkedAppIconSize[];
+extern const char kInvalidLinkedAppIconURL[];
+extern const char kInvalidLinkedAppIcons[];
 extern const char kInvalidManifest[];
 extern const char kInvalidManifestVersion[];
 extern const char kInvalidManifestVersionOld[];