Add support for calling the java Callback from native.

chrome/browser/android/ntp/ntp_snippets_bridge.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/ntp/ntp_snippets_bridge.h"
 
 #include <jni.h>
 
+#include "base/android/callback_android.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/callback.h"
 #include "chrome/browser/history/history_service_factory.h"
 #include "chrome/browser/ntp_snippets/ntp_snippets_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_android.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/history/core/browser/history_service.h"
@@ skipping 12 matching lines @@
 using base::android::ScopedJavaLocalRef;
 
 namespace {
 
 void SnippetVisitedHistoryRequestCallback(
       base::android::ScopedJavaGlobalRef<jobject> callback,
       bool success,
       const history::URLRow& row,
       const history::VisitVector& visitVector) {
   bool visited = success && row.visit_count() != 0;
-
-  JNIEnv* env = base::android::AttachCurrentThread();
-  Java_SnippetsBridge_runCallback(env, callback.obj(),
-                                  static_cast<jboolean>(visited));
+  base::android::RunCallbackAndroid(callback, visited);
 }
 
 } // namespace
 
 static jlong Init(JNIEnv* env,
                   const JavaParamRef<jobject>& obj,
                   const JavaParamRef<jobject>& j_profile) {
   NTPSnippetsBridge* snippets_bridge = new NTPSnippetsBridge(env, j_profile);
   return reinterpret_cast<intptr_t>(snippets_bridge);
 }
@@ skipping 116 matching lines @@
 void NTPSnippetsBridge::NTPSnippetsServiceDisabled() {
   // The user signed out or disabled sync. Since snippets rely on those, we
   // clear them to be consistent with the initially signed out state.
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_SnippetsBridge_onSnippetsDisabled(env, observer_.obj());
 }
 
 void NTPSnippetsBridge::OnImageFetched(ScopedJavaGlobalRef<jobject> callback,
                                        const std::string& snippet_id,
                                        const gfx::Image& image) {
-  JNIEnv* env = AttachCurrentThread();
-
   ScopedJavaLocalRef<jobject> j_bitmap;
   if (!image.IsEmpty())
     j_bitmap = gfx::ConvertToJavaBitmap(image.ToSkBitmap());
 
-  Java_FetchSnippetImageCallback_onSnippetImageAvailable(env, callback.obj(),
-                                                         j_bitmap.obj());
+  base::android::RunCallbackAndroid(callback, j_bitmap);
 }
 
 // static
 bool NTPSnippetsBridge::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }