Reland: Plugin Placeholders: Refactor for platforms that don't support plugins

components/plugins/renderer/mobile_youtube_plugin.cc

 // Copyright 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 "components/plugins/renderer/mobile_youtube_plugin.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/renderer/render_frame.h"
-#include "gin/handle.h"
 #include "gin/object_template_builder.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
-#include "third_party/WebKit/public/web/WebKit.h"
 #include "ui/base/webui/jstemplate_builder.h"
 
 using blink::WebFrame;
 using blink::WebPlugin;
 using blink::WebURLRequest;
 
 const char* const kSlashVSlash = "/v/";
 const char* const kSlashESlash = "/e/";
 
 namespace {
@@ skipping 38 matching lines @@
     // Once we start seeing extra parameters we can return true.
     return c == '&' && i > len;
   }
   return true;
 }
 
 }  // namespace
 
 namespace plugins {
 
+gin::WrapperInfo MobileYouTubePlugin::kWrapperInfo = {gin::kEmbedderNativeGin};
+
 MobileYouTubePlugin::MobileYouTubePlugin(content::RenderFrame* render_frame,
                                          blink::WebLocalFrame* frame,
                                          const blink::WebPluginParams& params,
-                                         base::StringPiece& template_html,
-                                         GURL placeholderDataUrl)
-    : PluginPlaceholder(render_frame,
-                        frame,
-                        params,
-                        HtmlData(params, template_html),
-                        placeholderDataUrl) {}
+                                         base::StringPiece& template_html)
+    : PluginPlaceholderBase(render_frame,
+                            frame,
+                            params,
+                            HtmlData(params, template_html)) {
+}
 
 MobileYouTubePlugin::~MobileYouTubePlugin() {}
 
 // static
 bool MobileYouTubePlugin::IsYouTubeURL(const GURL& url,
                                        const std::string& mime_type) {
   std::string host = url.host();
   bool is_youtube = EndsWith(host, "youtube.com", true) ||
                     EndsWith(host, "youtube-nocookie.com", true);
 
   return is_youtube && IsValidYouTubeVideo(url.path()) &&
          base::LowerCaseEqualsASCII(mime_type,
                                     content::kFlashPluginSwfMimeType);
 }
 
 void MobileYouTubePlugin::OpenYoutubeUrlCallback() {
   std::string youtube("vnd.youtube:");
   GURL url(youtube.append(GetYoutubeVideoId(GetPluginParams())));
   WebURLRequest request;
   request.initialize();
   request.setURL(url);
   render_frame()->LoadURLExternally(
       GetFrame(), request, blink::WebNavigationPolicyNewForegroundTab);
 }
 
-void MobileYouTubePlugin::BindWebFrame(WebFrame* frame) {
-  v8::Isolate* isolate = blink::mainThreadIsolate();
-  v8::HandleScope handle_scope(isolate);
-  v8::Local<v8::Context> context = frame->mainWorldScriptContext();
-  DCHECK(!context.IsEmpty());
-
-  v8::Context::Scope context_scope(context);
-  v8::Local<v8::Object> global = context->Global();
-  global->Set(gin::StringToV8(isolate, "plugin"),
-              gin::CreateHandle(isolate, this).ToV8());
+v8::Local<v8::Value> MobileYouTubePlugin::GetV8Handle(v8::Isolate* isolate) {
+  return gin::CreateHandle(isolate, this).ToV8();
 }
 
 gin::ObjectTemplateBuilder MobileYouTubePlugin::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
-  return PluginPlaceholder::GetObjectTemplateBuilder(isolate)
-    .SetMethod("openYoutubeURL", &MobileYouTubePlugin::OpenYoutubeUrlCallback);
+  return gin::Wrappable<MobileYouTubePlugin>::GetObjectTemplateBuilder(isolate)
+      .SetMethod("openYoutubeURL",
+                 &MobileYouTubePlugin::OpenYoutubeUrlCallback);
 }
 
 }  // namespace plugins