Rename ShortcutHelper::FetchSplashScreenImage() parameters to reflect correct units

chrome/browser/android/shortcut_helper.h

Index: chrome/browser/android/shortcut_helper.h
diff --git a/chrome/browser/android/shortcut_helper.h b/chrome/browser/android/shortcut_helper.h
index 8667d2a89647b0f48b19f919d7d39d62749e6bb0..7a30fd3f0f8bdf2f15ef6fbd464371c70aed0343 100644
--- a/chrome/browser/android/shortcut_helper.h
+++ b/chrome/browser/android/shortcut_helper.h
@@ -77,8 +77,8 @@ class ShortcutHelper {
   // passed as a closure to that method.
   static void FetchSplashScreenImage(content::WebContents* web_contents,
                                      const GURL& image_url,
-                                     const int ideal_splash_image_size_in_dp,
-                                     const int minimum_splash_image_size_in_dp,
+                                     const int ideal_splash_image_size_in_px,
+                                     const int minimum_splash_image_size_in_px,
                                      const std::string& webapp_id);
 
   // Stores the webapp splash screen in the WebappDataStorage associated with