Make "source" a required argument of AppLaunchParams and fill in the argument in all call points.

chrome/browser/ui/extensions/app_launch_params.cc

Index: chrome/browser/ui/extensions/app_launch_params.cc
diff --git a/chrome/browser/ui/extensions/app_launch_params.cc b/chrome/browser/ui/extensions/app_launch_params.cc
index fdb6a9f1e331be798eb8b3690320c0b48b582b2e..fd0bc087c35ef71d5e80de37f07d9d1b53ee9bcd 100644
--- a/chrome/browser/ui/extensions/app_launch_params.cc
+++ b/chrome/browser/ui/extensions/app_launch_params.cc
@@ -7,6 +7,7 @@
 #include "chrome/browser/extensions/launch_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "extensions/browser/extension_prefs.h"
+#include "extensions/common/constants.h"
 #include "extensions/common/extension.h"
 
 using extensions::ExtensionPrefs;
@@ -14,7 +15,8 @@ using extensions::ExtensionPrefs;
 AppLaunchParams::AppLaunchParams(Profile* profile,
                                  const extensions::Extension* extension,
                                  extensions::LaunchContainer container,
-                                 WindowOpenDisposition disposition)
+                                 WindowOpenDisposition disposition,
+                                 extensions::AppLaunchSource source)
     : profile(profile),
       extension_id(extension ? extension->id() : std::string()),
       container(container),
@@ -23,12 +25,13 @@ AppLaunchParams::AppLaunchParams(Profile* profile,
       override_url(),
       override_bounds(),
       command_line(CommandLine::NO_PROGRAM),
-      source(extensions::SOURCE_UNTRACKED) {
+      source(source) {
 }
 
 AppLaunchParams::AppLaunchParams(Profile* profile,
                                  const extensions::Extension* extension,
-                                 WindowOpenDisposition disposition)
+                                 WindowOpenDisposition disposition,
+                                 extensions::AppLaunchSource source)
     : profile(profile),
       extension_id(extension ? extension->id() : std::string()),
       container(extensions::LAUNCH_CONTAINER_NONE),
@@ -37,7 +40,7 @@ AppLaunchParams::AppLaunchParams(Profile* profile,
       override_url(),
       override_bounds(),
       command_line(CommandLine::NO_PROGRAM),
-      source(extensions::SOURCE_UNTRACKED) {
+      source(source) {
   // Look up the app preference to find out the right launch container. Default
   // is to launch as a regular tab.
   container =
@@ -47,7 +50,8 @@ AppLaunchParams::AppLaunchParams(Profile* profile,
 AppLaunchParams::AppLaunchParams(Profile* profile,
                                  const extensions::Extension* extension,
                                  int event_flags,
-                                 chrome::HostDesktopType desktop_type)
+                                 chrome::HostDesktopType desktop_type,
+                                 extensions::AppLaunchSource source)
     : profile(profile),
       extension_id(extension ? extension->id() : std::string()),
       container(extensions::LAUNCH_CONTAINER_NONE),
@@ -56,7 +60,7 @@ AppLaunchParams::AppLaunchParams(Profile* profile,
       override_url(),
       override_bounds(),
       command_line(CommandLine::NO_PROGRAM),
-      source(extensions::SOURCE_UNTRACKED) {
+      source(source) {
   if (disposition == NEW_FOREGROUND_TAB || disposition == NEW_BACKGROUND_TAB) {
     container = extensions::LAUNCH_CONTAINER_TAB;
   } else if (disposition == NEW_WINDOW) {