Android WebView: Make a custom Picture subclass

android_webview/native/java_browser_view_renderer_helper.cc

 // Copyright (c) 2013 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 "android_webview/native/java_browser_view_renderer_helper.h"
 
 #include "base/debug/trace_event.h"
 #include "jni/JavaBrowserViewRendererHelper_jni.h"
 
 using base::android::JavaRef;
 using base::android::ScopedJavaLocalRef;
 
 namespace android_webview {
 
 JavaBrowserViewRendererHelper::JavaBrowserViewRendererHelper() {
 }
 
 JavaBrowserViewRendererHelper::~JavaBrowserViewRendererHelper() {
 }
 
+// static
+JavaBrowserViewRendererHelper* JavaBrowserViewRendererHelper::GetInstance() {
+  static JavaBrowserViewRendererHelper* g_instance =
+      new JavaBrowserViewRendererHelper;
+  return g_instance;
+}
+
 ScopedJavaLocalRef<jobject> JavaBrowserViewRendererHelper::CreateBitmap(
     JNIEnv* env,
     int width,
     int height,
     const base::android::JavaRef<jobject>& jcanvas,
     void* owner_key) {
   TRACE_EVENT0("android_webview", "RendererHelper::CreateBitmap");
   return width <= 0 || height <= 0 ? ScopedJavaLocalRef<jobject>() :
       Java_JavaBrowserViewRendererHelper_createBitmap(
           env, width, height, jcanvas.obj(),
@@ skipping 18 matching lines @@
   TRACE_EVENT0("android_webview", "RendererHelper::RecordBitmapIntoPicture");
   return Java_JavaBrowserViewRendererHelper_recordBitmapIntoPicture(
       env, jbitmap.obj());
 }
 
 bool RegisterJavaBrowserViewRendererHelper(JNIEnv* env) {
   return RegisterNativesImpl(env) >= 0;
 }
 
 }  // namespace android_webview