Observer Support for DistilledPagePrefs

components/dom_distiller/core/distilled_page_prefs_observer_wrapper.cc

Index: components/dom_distiller/core/distilled_page_prefs_observer_wrapper.cc
diff --git a/components/dom_distiller/core/distilled_page_prefs_observer_wrapper.cc b/components/dom_distiller/core/distilled_page_prefs_observer_wrapper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6c67238d2776091af11e9cf0fc57769204b1bc00
--- /dev/null
+++ b/components/dom_distiller/core/distilled_page_prefs_observer_wrapper.cc
@@ -0,0 +1,39 @@
+#include "base/android/jni_weak_ref.h"
+#include "components/dom_distiller/core/distilled_page_prefs.h"
+#include "components/dom_distiller/core/distilled_page_prefs_observer_wrapper.h"
+
+#include "jni/DistilledPagePrefsObserverWrapper_jni.h"
+
+namespace dom_distiller {
+
+DistilledPagePrefsObserverWrapper::DistilledPagePrefsObserverWrapper(
+    JNIEnv* env,
+    jobject obj) {
+  java_ref_.Reset(env, obj);
+}
+
+DistilledPagePrefsObserverWrapper::~DistilledPagePrefsObserverWrapper() {
+}
+
+bool DistilledPagePrefsObserverWrapper::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+void DistilledPagePrefsObserverWrapper::Destroy(JNIEnv* env, jobject obj) {
+  delete this;
+}
+
+void DistilledPagePrefsObserverWrapper::OnChangeTheme(
+    DistilledPagePrefs::Theme new_theme) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_DistilledPagePrefsObserverWrapper_onChangeTheme(
+      env, java_ref_.obj(), (int)new_theme);
+}
+
+jlong Init(JNIEnv* env, jobject obj) {
+  DistilledPagePrefsObserverWrapper* native_observer_wrapper_ =
+      new DistilledPagePrefsObserverWrapper(env, obj);
+  return reinterpret_cast<intptr_t>(native_observer_wrapper_);
+}
+
+}  // namespace dom_distiller