Add a PPB_Flash_Print interface and implement in Chrome.

chrome/renderer/pepper/ppb_flash_print_impl.cc

+// Copyright (c) 2012 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/renderer/pepper/ppb_flash_print_impl.h"
+
+#include "chrome/renderer/print_web_view_helper.h"
+#include "content/public/renderer/render_view.h"
+#include "ppapi/c/private/ppb_flash_print.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
+#include "webkit/plugins/ppapi/host_globals.h"
+#include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
+
+using webkit::ppapi::HostGlobals;
+using webkit::ppapi::PluginInstance;
+
+namespace {
+
+const PPB_Flash_Print flash_print_interface = {
+  &PPB_Flash_Print_Impl::InvokePrintingForInstance
+};
+
+}  // namespace
+
+// static
+const PPB_Flash_Print_1_0* PPB_Flash_Print_Impl::GetInterface() {
+  return &flash_print_interface;
+}
+
+// static
+void PPB_Flash_Print_Impl::InvokePrintingForInstance(PP_Instance instance_id) {
+  PluginInstance* instance = HostGlobals::Get()->GetInstance(instance_id);
+  if (!instance)
+    return;
+
+  WebKit::WebElement element = instance->container()->element();
+  WebKit::WebView* view = element.document().frame()->view();
+  content::RenderView* render_view = content::RenderView::FromWebView(view);
+
+  PrintWebViewHelper* print_view_helper = PrintWebViewHelper::Get(render_view);
+  if (print_view_helper)
+    print_view_helper->PrintNode(element);
+}