Update Maven URL to https (#52042)

packages/flutter_tools/gradle/aar_init_script.gradle

@@ -57,7 +57,7 @@ void configureProject(Project project, String outputDir) {
     // as a result, add the dependency on the embedding.
     project.repositories {
         maven {
-            url "http://download.flutter.io"
+            url "https://storage.googleapis.com/download.flutter.io"
         }
     }
     String engineVersion = Paths.get(getFlutterRoot(project), "bin", "internal", "engine.version")

packages/flutter_tools/gradle/flutter.gradle

@@ -41,7 +41,7 @@ android {
 apply plugin: FlutterPlugin
 
 class FlutterPlugin implements Plugin<Project> {
-    private static final String MAVEN_REPO      = "http://download.flutter.io";
+    private static final String MAVEN_REPO      = "https://storage.googleapis.com/download.flutter.io";
 
     // The platforms that can be passed to the `--Ptarget-platform` flag.
     private static final String PLATFORM_ARM32  = "android-arm";

packages/flutter_tools/gradle/resolve_dependencies.gradle

@@ -18,7 +18,7 @@ repositories {
     google()
     jcenter()
     maven {
-        url "http://download.flutter.io"
+        url "https://storage.googleapis.com/download.flutter.io"
     }
 }
 

packages/flutter_tools/lib/src/android/gradle.dart

@@ -637,7 +637,7 @@ ${globals.terminal.bolden('Consuming the Module')}
             url '${repoDirectory.path}'
         }
         maven {
-            url 'http://download.flutter.io'
+            url 'https://storage.googleapis.com/download.flutter.io'
         }
       }
 

packages/flutter_tools/test/general.shard/android/gradle_test.dart

@@ -2446,7 +2446,7 @@ plugin1=${plugin1.path}
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2498,7 +2498,7 @@ plugin1=${plugin1.path}
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2537,7 +2537,7 @@ plugin1=${plugin1.path}
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'
@@ -2577,7 +2577,7 @@ plugin1=${plugin1.path}
           "            url 'build/'\n"
           '        }\n'
           '        maven {\n'
-          "            url 'http://download.flutter.io'\n"
+          "            url 'https://storage.googleapis.com/download.flutter.io'\n"
           '        }\n'
           '      }\n'
           '\n'