Address review comment.

Author: vkryachko

firebase-common/src/main/java/com/google/firebase/FirebaseCommonRegistrar.java

@@ -47,9 +47,9 @@ public List<Component<?>> getComponents() {
     result.add(
         LibraryVersionComponent.create(FIREBASE_ANDROID, String.valueOf(Build.VERSION.SDK_INT)));
     result.add(LibraryVersionComponent.create(FIREBASE_COMMON, BuildConfig.VERSION_NAME));
-    result.add(LibraryVersionComponent.create(DEVICE_NAME, removeSpaces(Build.PRODUCT)));
-    result.add(LibraryVersionComponent.create(DEVICE_MODEL, removeSpaces(Build.DEVICE)));
-    result.add(LibraryVersionComponent.create(DEVICE_BRAND, removeSpaces(Build.BRAND)));
+    result.add(LibraryVersionComponent.create(DEVICE_NAME, safeValue(Build.PRODUCT)));
+    result.add(LibraryVersionComponent.create(DEVICE_MODEL, safeValue(Build.DEVICE)));
+    result.add(LibraryVersionComponent.create(DEVICE_BRAND, safeValue(Build.BRAND)));
     result.add(
         LibraryVersionComponent.fromContext(
             TARGET_SDK,
@@ -98,7 +98,7 @@ public List<Component<?>> getComponents() {
             ctx -> {
               String installer =
                   ctx.getPackageManager().getInstallerPackageName(ctx.getPackageName());
-              return (installer != null) ? removeSpaces(installer) : "";
+              return (installer != null) ? safeValue(installer) : "";
             }));
 
     String kotlinVersion = KotlinDetector.detectVersion();
@@ -108,7 +108,7 @@ public List<Component<?>> getComponents() {
     return result;
   }
 
-  private static String removeSpaces(String value) {
-    return value.replace(' ', '_');
+  private static String safeValue(String value) {
+    return value.replace(' ', '_').replace('/', '_');
   }
 }

firebase-common/src/test/java/com/google/firebase/platforminfo/FirebasePlatformLoggingTest.java

@@ -160,8 +160,8 @@ public void test_installerPackage_withNoInstallerSet() {
   @Test
   public void test_installerPackage_withInstallerSet() {
 
-    String installer = "com.example store";
-    String safeInstaller = "com.example_store";
+    String installer = "com/example store";
+    String safeInstaller = "com_example_store";
     ApplicationProvider.getApplicationContext()
         .getPackageManager()
         .setInstallerPackageName(