Implement ManifestManager to handle manifest in content/

content/public/browser/web_contents.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_
 
 #include <set>
 
 #include "base/basictypes.h"
@@ skipping 39 matching lines @@
 class InterstitialPage;
 class PageState;
 class RenderFrameHost;
 class RenderProcessHost;
 class RenderViewHost;
 class RenderWidgetHostView;
 class SiteInstance;
 class WebContentsDelegate;
 struct CustomContextMenuContext;
 struct DropData;
+struct Manifest;
 struct RendererPreferences;
 
 // WebContents is the core class in content/. A WebContents renders web content
 // (usually HTML) in a rectangular area.
 //
 // Instantiating one is simple:
 //   scoped_ptr<content::WebContents> web_contents(
 //       content::WebContents::Create(
 //           content::WebContents::CreateParams(browser_context)));
 //   gfx::NativeView view = web_contents->GetNativeView();
@@ skipping 499 matching lines @@
                     const base::string16& search_text,
                     const blink::WebFindOptions& options) = 0;
 
   // Notifies the renderer that the user has closed the FindInPage window
   // (and what action to take regarding the selection).
   virtual void StopFinding(StopFindAction action) = 0;
 
   // Requests the renderer to insert CSS into the main frame's document.
   virtual void InsertCSS(const std::string& css) = 0;
 
+  typedef base::Callback<void(const Manifest&)> GetManifestCallback;
+
+  // Requests the Manifest of the main frame's document.
+  virtual void GetManifest(const GetManifestCallback&) = 0;
+
 #if defined(OS_ANDROID)
   CONTENT_EXPORT static WebContents* FromJavaWebContents(
       jobject jweb_contents_android);
   virtual base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() = 0;
 #elif defined(OS_MACOSX)
   // Allowing other views disables optimizations which assume that only a single
   // WebContents is present.
   virtual void SetAllowOtherViews(bool allow) = 0;
 
   // Returns true if other views are allowed, false otherwise.
   virtual bool GetAllowOtherViews() = 0;
 #endif  // OS_ANDROID
 
  private:
   // This interface should only be implemented inside content.
   friend class WebContentsImpl;
   WebContents() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_H_