Add a flag that lets the webstore show a different UI on app install.

chrome/browser/extensions/extension_webstore_private_api.cc

Index: chrome/browser/extensions/extension_webstore_private_api.cc
diff --git a/chrome/browser/extensions/extension_webstore_private_api.cc b/chrome/browser/extensions/extension_webstore_private_api.cc
index 8276e815d75e6eda33c11bab6754afa6932f6a48..0f56c34f7d7c3711fa3207a82909b5a62b0c3753 100644
--- a/chrome/browser/extensions/extension_webstore_private_api.cc
+++ b/chrome/browser/extensions/extension_webstore_private_api.cc
@@ -37,6 +37,7 @@
 
 namespace {
 
+const char kAppInstallBubbleKey[] = "appInstallBubble";
 const char kIconDataKey[] = "iconData";
 const char kIdKey[] = "id";
 const char kLocalizedNameKey[] = "localizedName";
@@ -293,7 +294,8 @@ class SafeBeginInstallHelper : public UtilityProcessHost::Client {
   BeginInstallWithManifestFunction::ResultCode parse_error_;
 };
 
-BeginInstallWithManifestFunction::BeginInstallWithManifestFunction() {}
+BeginInstallWithManifestFunction::BeginInstallWithManifestFunction()
+  : use_app_installed_bubble_(false) {}
 
 BeginInstallWithManifestFunction::~BeginInstallWithManifestFunction() {}
 
@@ -329,6 +331,10 @@ bool BeginInstallWithManifestFunction::RunImpl() {
     EXTENSION_FUNCTION_VALIDATE(details->GetString(kLocalizedNameKey,
                                                    &localized_name_));
 
+  if (details->HasKey(kAppInstallBubbleKey))
+    EXTENSION_FUNCTION_VALIDATE(details->GetBoolean(
+        kAppInstallBubbleKey, &use_app_installed_bubble_));
+
   scoped_refptr<SafeBeginInstallHelper> helper =
       new SafeBeginInstallHelper(this, icon_data_, manifest_);
   // The helper will call us back via OnParseSucces or OnParseFailure.
@@ -451,6 +457,7 @@ void BeginInstallWithManifestFunction::InstallUIProceed() {
   CrxInstaller::WhitelistEntry* entry = new CrxInstaller::WhitelistEntry;
   entry->parsed_manifest.reset(parsed_manifest_.release());
   entry->localized_name = localized_name_;
+  entry->use_app_installed_bubble = use_app_installed_bubble_;
   CrxInstaller::SetWhitelistEntry(id_, entry);
   SetResult(ERROR_NONE);
   SendResponse(true);