Default homepages for China releases

Huawei VR: https://wolvic.com/zh/start/index.html

Huawei Vision Glass: https://wolvic.com/zh/start/hvg.html

PICO: https://wolvic.com/zh/start/pico.html

app/build.gradle

@@ -399,7 +399,6 @@ android {
             buildConfigField "Boolean", "FXA_USE_CHINA_SERVER", "true"
             buildConfigField "Boolean", "WEBVIEW_IN_PHONE_UI", "true"
             buildConfigField "Boolean", "CN_FIRST_RUN_IN_PHONE_UI", "true"
-            resValue 'string', 'HOMEPAGE_URL', 'https://wolvic.com/zh/start/pico.html'
         }
     }
 
@@ -820,6 +819,17 @@ android.applicationVariants.all { variant ->
         variant.buildConfigField "String[]", "SPEECH_SERVICES", "{ com.igalia.wolvic.speech.SpeechServices.HUAWEI_ASR }"
     }
 
+    // Default homepages for China releases.
+    if (store == "mainlandChina") {
+        if (platform.toLowerCase().startsWith('hvr')) {
+            variant.buildConfigField 'String', 'HOMEPAGE_URL', 'https://wolvic.com/zh/start/index.html'
+        } else if (platform.toLowerCase().startsWith('visionglass')) {
+            variant.buildConfigField 'String', 'HOMEPAGE_URL', 'https://wolvic.com/zh/start/hvg.html'
+        } else if (platform.toLowerCase().startsWith('pico')) {
+            variant.buildConfigField 'String', 'HOMEPAGE_URL', 'https://wolvic.com/zh/start/pico.html'
+        }
+    }
+
     // Append "Dev" to the app name for debug builds. We do it by directly modifying the resource
     // value so that this is visible from inside the app.
     if (variant.buildType.name == "debug") {