webapps: allow callers of icon downloader/selector to specify a minimum size

chrome/browser/android/shortcut_helper.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 #define CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
 #include "chrome/browser/android/shortcut_info.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 namespace content {
 class WebContents;
 }  // namespace content
 
 // ShortcutHelper is the C++ counterpart of org.chromium.chrome.browser's
 // ShortcutHelper in Java.
 class ShortcutHelper {
  public:
   // Registers JNI hooks.
   static bool RegisterShortcutHelper(JNIEnv* env);
 
   // Adds a shortcut to the launcher using a SkBitmap.
   // Must be called on the IO thread.
   static void AddShortcutInBackgroundWithSkBitmap(const ShortcutInfo& info,
                                                   const std::string& webapp_id,
                                                   const SkBitmap& icon_bitmap);
 
+  // Returns the ideal size for an icon representing a web app.
+  static int GetIdealHomescreenIconSizeInDp();
+
+  // Returns the minimum size for an icon representing a web app.
+  static int GetMinimumHomescreenIconSizeInDp();
+
+  // Returns the ideal size for an image displayed on a web app's splash
+  // screen.
+  static int GetIdealSplashImageSizeInDp();
+
+  // Returns the minimum size for an image displayed on a web app's splash
+  // screen.
+  static int GetMinimumSplashImageSizeInDp();
+
   // Fetches the splash screen image and stores it inside the WebappDataStorage
   // of the webapp.
   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 std::string& webapp_id);
 
   // Stores the data of the webapp which is not placed inside the shortcut.
   static void StoreWebappData(const std::string& webapp_id,
                               const SkBitmap& splash_image);
 
  private:
   ShortcutHelper() = delete;
   ~ShortcutHelper() = delete;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutHelper);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_SHORTCUT_HELPER_H_