Remove net & url small, iOS ICU alternatives, unit tests.

url/android/url_jni_registrar.cc

Index: url/android/url_jni_registrar.cc
diff --git a/url/android/url_jni_registrar.cc b/url/android/url_jni_registrar.cc
index 82a6e1b76bd699624c8b7296382668c4cc46abaa..1c0bbef58b5464faae0c3b6de3f27bb6aa8ca309 100644
--- a/url/android/url_jni_registrar.cc
+++ b/url/android/url_jni_registrar.cc
@@ -4,7 +4,7 @@
 
 #include "url/android/url_jni_registrar.h"
 
-#ifdef USE_ICU_ALTERNATIVES_ON_ANDROID
+#ifdef USE_PLATFORM_ICU_ALTERNATIVES
 #include "url/url_canon_icu_alternatives_android.h"
 #endif
 
@@ -12,11 +12,11 @@ namespace url {
 namespace android {
 
 bool RegisterJni(JNIEnv* env) {
-#ifdef USE_ICU_ALTERNATIVES_ON_ANDROID
+#ifdef USE_PLATFORM_ICU_ALTERNATIVES
   return RegisterIcuAlternativesJni(env);
 #endif
 
-  // Do nothing if USE_ICU_ALTERNATIVES_ON_ANDROID is not defined.
+  // Do nothing if USE_PLATFORM_ICU_ALTERNATIVES is not defined.
   return true;
 }