Move --custom-launcher-page switch into app_list_switches.h.

This CL moves the --custom-launcher-page switch into app_list_switches.h
because it probably belongs there with the other app list related
switches.

BUG=416756

Review URL: https://codereview.chromium.org/598463002

Cr-Commit-Position: refs/heads/master@{#297373}

chrome/browser/ui/app_list/app_list_view_delegate.cc

@@ -116,9 +116,9 @@ void GetCustomLauncherPageUrls(content::BrowserContext* browser_context,
   // First, check the command line.
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (app_list::switches::IsExperimentalAppListEnabled() &&
-      command_line->HasSwitch(switches::kCustomLauncherPage)) {
-    GURL custom_launcher_page_url(
-        command_line->GetSwitchValueASCII(switches::kCustomLauncherPage));
+      command_line->HasSwitch(app_list::switches::kCustomLauncherPage)) {
+    GURL custom_launcher_page_url(command_line->GetSwitchValueASCII(
+        app_list::switches::kCustomLauncherPage));
 
     if (custom_launcher_page_url.SchemeIs(extensions::kExtensionScheme)) {
       urls->push_back(custom_launcher_page_url);

chrome/common/chrome_switches.cc

@@ -187,10 +187,6 @@ const char kCrashOnHangThreads[]            = "crash-on-hang-threads";
 const char kCreateBrowserOnStartupForTests[] =
     "create-browser-on-startup-for-tests";
 
-// Specifies the chrome-extension:// URL for the contents of an additional page
-// added to the experimental app launcher.
-const char kCustomLauncherPage[]            = "custom-launcher-page";
-
 // Enables a frame context menu item that toggles the frame in and out of glass
 // mode (Windows Vista and up only).
 const char kDebugEnableFrameToggle[]        = "debug-enable-frame-toggle";

chrome/common/chrome_switches.h

@@ -60,7 +60,6 @@ extern const char kCloudPrintPrintTicket[];
 extern const char kCloudPrintSetupProxy[];
 extern const char kCrashOnHangThreads[];
 extern const char kCreateBrowserOnStartupForTests[];
-extern const char kCustomLauncherPage[];
 extern const char kDebugEnableFrameToggle[];
 extern const char kDebugPackedApps[];
 extern const char kDiagnostics[];

ui/app_list/app_list_switches.cc

@@ -9,6 +9,10 @@
 namespace app_list {
 namespace switches {
 
+// Specifies the chrome-extension:// URL for the contents of an additional page
+// added to the experimental app launcher.
+const char kCustomLauncherPage[] = "custom-launcher-page";
+
 // If set, the app info context menu item is not available in the app list UI.
 const char kDisableAppInfo[] = "disable-app-list-app-info";
 

ui/app_list/app_list_switches.h

@@ -11,6 +11,7 @@ namespace app_list {
 namespace switches {
 
 // Please keep these flags sorted.
+APP_LIST_EXPORT extern const char kCustomLauncherPage[];
 APP_LIST_EXPORT extern const char kDisableAppInfo[];
 APP_LIST_EXPORT extern const char kDisableDriveAppsInAppList[];
 APP_LIST_EXPORT extern const char kDisableSyncAppList[];