Remove JNI onload callback vector construction in favour of direct calls.

content/public/app/content_jni_onload.h

Index: content/public/app/content_jni_onload.h
diff --git a/content/public/app/content_jni_onload.h b/content/public/app/content_jni_onload.h
index 1b220f528445eae22e8a4d445eb571bcf15eefd0..0f449ea56e2a85c70632a849099d605aa10c4ff4 100644
--- a/content/public/app/content_jni_onload.h
+++ b/content/public/app/content_jni_onload.h
@@ -14,13 +14,10 @@ namespace content {
 namespace android {
 
 // Returns true if JNI registration succeeded.
-CONTENT_EXPORT bool OnJNIOnLoadRegisterJNI(
-    JavaVM* vm,
-    std::vector<base::android::RegisterCallback> callbacks);
+CONTENT_EXPORT bool OnJNIOnLoadRegisterJNI(JNIEnv* env);
 
 // Returns true if initialization succeeded.
-CONTENT_EXPORT bool OnJNIOnLoadInit(
-    std::vector<base::android::InitCallback> callbacks);
+CONTENT_EXPORT bool OnJNIOnLoadInit();
 
 }  // namespace android
 }  // namespace content