Create Linux platform app shortcuts to run in their own process.

chrome/browser/web_applications/web_app.h

Index: chrome/browser/web_applications/web_app.h
diff --git a/chrome/browser/web_applications/web_app.h b/chrome/browser/web_applications/web_app.h
index cfdbdbd5ed4d0d1fb8c7a6ce54b977d5203a9943..a9e55a6f6fff327e59b9053a1474f5ad964e6bd5 100644
--- a/chrome/browser/web_applications/web_app.h
+++ b/chrome/browser/web_applications/web_app.h
@@ -46,14 +46,20 @@ std::string GenerateApplicationNameFromExtensionId(const std::string& id);
 std::string GetExtensionIdFromApplicationName(const std::string& app_name);
 
 // Creates a shortcut for web application based on given shortcut data.
-// |profile_path| is used as root directory for persisted data such as icon.
-// Directory layout is similar to what Gears has, i.e. an web application's
-// file is stored under "#/host_name/scheme_port", where '#' is the
-// |root_dir|.  A crx based app uses a directory named _crx_<app id>.
+// |profile_path| is the path of the creating profile. |shortcut_info)
+// contains information about the shortcut to create.
 void CreateShortcut(
     const FilePath& profile_path,
     const ShellIntegration::ShortcutInfo& shortcut_info);
 
+// Creates a shortcut. Must be called on the file thread. This is used to
+// implement CreateShortcut() above, and can also be used directly from the
+// file thread. |profile_path| is the path of the creating profile.
+// |shortcut_info| constains info about the shortcut to create.
+bool CreateShortcutOnFileThread(
+    const FilePath& profile_path,
+    const ShellIntegration::ShortcutInfo& shortcut_info);
+
 // Returns true if given url is a valid web app url.
 bool IsValidUrl(const GURL& url);
 
@@ -78,11 +84,16 @@ namespace internals {
 bool CheckAndSaveIcon(const FilePath& icon_file, const SkBitmap& image);
 #endif
 
-// Does the actual job of creating a shortcut (see CreateShortcut() above).
-// This must be called on the file thread.
-void CreateShortcutTask(const FilePath& web_app_path,
-                        const FilePath& profile_path,
-                        const ShellIntegration::ShortcutInfo& shortcut_info);
+// Implemented for each platform, does the platform specific parts of creating
+// shortcuts. Used internally by CreateShortcutOnFileThread.
+// |shortcut_data_path| is where to store any resources created for the
+// shortcut, and is also used as the UserDataDir for platform app shortcuts.
+// |profile_path| is the path of the creating profile. |shortcut_info|
+// contains info about the shortcut to create.
+bool CreatePlatformShortcut(
+    const FilePath& shortcut_data_path,
+    const FilePath& profile_path,
+    const ShellIntegration::ShortcutInfo& shortcut_info);
 
 // Sanitizes |name| and returns a version of it that is safe to use as an
 // on-disk file name .