Replace Webstore link with app info dialog link in chrome://apps

chrome/browser/ui/apps/app_info_dialog.h

Index: chrome/browser/ui/apps/app_info_dialog.h
diff --git a/chrome/browser/ui/apps/app_info_dialog.h b/chrome/browser/ui/apps/app_info_dialog.h
index 35989485281d5affe94a9b4534f359d2a86dfef7..70bce0cc08a323fee708e0c51151b1af5b02ff43 100644
--- a/chrome/browser/ui/apps/app_info_dialog.h
+++ b/chrome/browser/ui/apps/app_info_dialog.h
@@ -23,9 +23,16 @@ class Size;
 enum AppInfoLaunchSource {
   FROM_APP_LIST,         // Launched from the app list context menu.
   FROM_EXTENSIONS_PAGE,  // Launched from the chrome://extensions page.
+  FROM_APPS_PAGE,        // Launched from chrome://apps context menu.
   NUM_LAUNCH_SOURCES,
 };
 
+// Returns true if the app info dialog is available on the current platform.
+bool CanShowAppInfoDialog();
+
+// Returns the size of the native window container for the app info dialog.
+gfx::Size GetAppInfoNativeDialogSize();
+
 // Shows the chrome app information as a frameless window for the given |app|
 // and |profile| at the given |app_list_bounds|. Appears 'inside' the app list.
 void ShowAppInfoInAppList(gfx::NativeWindow parent,