[Android] Add a Java version of net::test_server::EmbeddedTestServer.

net/test/embedded_test_server/android/embedded_test_server_android.cc

+#include "net/test/embedded_test_server/android/embedded_test_server_android.h"
+
+#include "base/android/jni_array.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/bind.h"
+#include "base/files/file_path.h"
+#include "base/trace_event/trace_event.h"
+#include "net/test/jni/EmbeddedTestServer_jni.h"
+
+namespace net {
+namespace test_server {
+
+EmbeddedTestServerAndroid::EmbeddedTestServerAndroid(JNIEnv* env, jobject obj)
+    : weak_java_server_(env, obj), test_server_() {
+  Java_EmbeddedTestServer_setNativePtr(env, obj,
+                                       reinterpret_cast<intptr_t>(this));
+}
+
+EmbeddedTestServerAndroid::~EmbeddedTestServerAndroid() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_EmbeddedTestServer_clearNativePtr(env, weak_java_server_.get(env).obj());
+}
+
+jboolean EmbeddedTestServerAndroid::InitializeAndWaitUntilReady(JNIEnv* env,
+                                                                jobject obj) {
+  return test_server_.InitializeAndWaitUntilReady();

[mef, 2015/06/17 21:55:56]

what if ServeFilesFromDirectory was not called?

[jbudorick, 2015/06/18 17:44:56]

The server will hit this when attempting to handle a request:
https://code.google.com/p/chromium/codesearch#chromium/src/net/test/embedded_...

+}
+
+jboolean EmbeddedTestServerAndroid::ShutdownAndWaitUntilComplete(JNIEnv* env,
+                                                                 jobject obj) {
+  return test_server_.ShutdownAndWaitUntilComplete();
+}
+
+base::android::ScopedJavaLocalRef<jstring> EmbeddedTestServerAndroid::GetURL(
+    JNIEnv* env,
+    jobject obj,
+    jstring relative_url) const {
+  const GURL gurl(test_server_.GetURL(
+      base::android::ConvertJavaStringToUTF8(env, relative_url)));
+  return base::android::ConvertUTF8ToJavaString(env, gurl.spec());
+}
+
+void EmbeddedTestServerAndroid::ServeFilesFromDirectory(
+    JNIEnv* env,
+    jobject obj,
+    jstring directory_path) {
+  const base::FilePath directory(
+      base::android::ConvertJavaStringToUTF8(env, directory_path));
+  test_server_.ServeFilesFromDirectory(directory);
+}
+
+void EmbeddedTestServerAndroid::Destroy(JNIEnv* env, jobject obj) {
+  delete this;
+}
+
+static void Init(JNIEnv* env, jobject obj) {
+  TRACE_EVENT0("native", "EmbeddedTestServerAndroid::Init");
+  new EmbeddedTestServerAndroid(env, obj);
+}
+
+// static
+bool EmbeddedTestServerAndroid::RegisterEmbeddedTestServerAndroid(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace test_server
+}  // namespace net