Added 'launcher_page' field to extension manifest.json format.

Adds a new manifest section which allows extensions (currently, only
platform apps) to provide a page in the experimental app launcher, eg:

  "launcher_page": {
    "page": "index.html"
  }

All installed apps with a valid launcher_page section will be given a
page in the launcher.

This feature is currently only available on dev channel and whitelisted
(currently to a few testing apps; this list will expand in the future,
and can be overridden with --whitelisted-extension-id=ID).

Updated CustomLauncherPageBrowserTest to use its manifest to install the
launcher page, rather than using --custom-launcher-page.

BUG=399131,404000

Review URL: https://codereview.chromium.org/475543004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@289931 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 0 deletions

diff --git a/extensions/common/manifest_constants.cc b/extensions/common/manifest_constants.cc
index 95d6d8b..fbf3229 100644
--- a/extensions/common/manifest_constants.cc
+++ b/extensions/common/manifest_constants.cc
@@ -68,6 +68,8 @@ const char kKioskMode[] = "kiosk_mode";
 const char kLanguage[] = "language";
 const char kLaunch[] = "app.launch";
 const char kLaunchContainer[] = "app.launch.container";
+const char kLauncherPage[] = "launcher_page";
+const char kLauncherPagePage[] = "launcher_page.page";
 const char kLaunchHeight[] = "app.launch.height";
 const char kLaunchLocalPath[] = "app.launch.local_path";
 const char kLaunchWebURL[] = "app.launch.web_url";