Introduce LaunchParams struct for opening chrome apps.

chrome/browser/ui/extensions/application_launch.cc

Index: chrome/browser/ui/extensions/application_launch.cc
diff --git a/chrome/browser/ui/extensions/application_launch.cc b/chrome/browser/ui/extensions/application_launch.cc
index 0c55569fbc06afed7b82b97b9a0af5269c3bec79..a2a86b69bf9c5ad6928c01c650b564c060edca41 100644
--- a/chrome/browser/ui/extensions/application_launch.cc
+++ b/chrome/browser/ui/extensions/application_launch.cc
@@ -81,12 +81,23 @@ bool AllowPanels(const std::string& app_name) {
 
 namespace application_launch {
 
-WebContents* OpenApplication(Profile* profile,
-                             const Extension* extension,
-                             extension_misc::LaunchContainer container,
-                             const GURL& override_url,
-                             WindowOpenDisposition disposition,
-                             const CommandLine* command_line) {
+LaunchParams::LaunchParams(Profile* profile,
+                           const extensions::Extension* extension,
+                           extension_misc::LaunchContainer container,
+                           WindowOpenDisposition disposition)
+    : profile(profile),
+      extension(extension),
+      container(container),
+      disposition(disposition),
+      override_url(),
+      command_line(NULL) {}
+
+WebContents* OpenApplication(const LaunchParams& params) {
+  Profile* profile = params.profile;
+  const extensions::Extension* extension = params.extension;
+  extension_misc::LaunchContainer container = params.container;
+  const GURL& override_url = params.override_url;
+
   WebContents* tab = NULL;
   ExtensionPrefs* prefs = profile->GetExtensionService()->extension_prefs();
   prefs->SetActiveBit(extension->id(), true);
@@ -98,7 +109,7 @@ WebContents* OpenApplication(Profile* profile,
 #endif
 
   if (extension->is_platform_app()) {
-    extensions::LaunchPlatformApp(profile, extension, command_line);
+    extensions::LaunchPlatformApp(profile, extension, params.command_line);
     return NULL;
   }
 
@@ -128,7 +139,7 @@ WebContents* OpenApplication(Profile* profile,
       break;
     case extension_misc::LAUNCH_TAB: {
       tab = OpenApplicationTab(profile, extension, override_url,
-                               disposition);
+                               params.disposition);
       break;
     }
     default: