[NotLanded] Implement the fetching algorithm of the Web Manifest.

public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 27 matching lines @@
 #include "WebHistoryCommitType.h"
 #include "WebHistoryItem.h"
 #include "WebIconURL.h"
 #include "WebNavigationPolicy.h"
 #include "WebNavigationType.h"
 #include "WebSecurityOrigin.h"
 #include "WebTextDirection.h"
 #include "public/platform/WebCommon.h"
 #include "public/platform/WebFileSystem.h"
 #include "public/platform/WebFileSystemType.h"
+#include "public/platform/WebManifest.h"
+#include "public/platform/WebManifestError.h"
 #include "public/platform/WebStorageQuotaCallbacks.h"
 #include "public/platform/WebStorageQuotaType.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebURLRequest.h"
 #include <v8.h>
 
 namespace blink {
 
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
@@ skipping 233 matching lines @@
     // The navigation resulted in no change to the documents within the page.
     // For example, the navigation may have just resulted in scrolling to a
     // named anchor or a PopState event may have been dispatched.
     virtual void didNavigateWithinPage(WebLocalFrame*, const WebHistoryItem&, WebHistoryCommitType) { }
 
     // Called upon update to scroll position, document state, and other
     // non-navigational events related to the data held by WebHistoryItem.
     // WARNING: This method may be called very frequently.
     virtual void didUpdateCurrentHistoryItem(WebLocalFrame*) { }
 
-    // The frame's manifest has changed.
-    virtual void didChangeManifest(WebLocalFrame*) { }
-
     // The frame's theme color has changed.
     virtual void didChangeThemeColor() { }
 
 
+    // Web Manifest ---------------------------------------------------------
+
+    // The frame's manifest has changed.
+    virtual void didChangeManifest(WebLocalFrame*) { }
+
+    // The frame's manifest has been loaded successfully.
+    virtual void didLoadManifest(WebLocalFrame*, WebManifest) { }

[Mikhail, 2014/08/29 12:49:18]

maybe it's worth adding the new API after the WebManifest is completed?
(I guess the semantics would eventually change then, e.g. "WebManifest" ->
"const WebManifest&" or maybe in some other ways)

[mlamouri (slow - plz ping), 2014/09/01 19:23:51]

Nate already reviewed the Blink API so I would prefer to keep it part of this
CL.

+
+    // The frame's manifest loading has failed.
+    virtual void didFailLoadManifest(WebLocalFrame*, WebManifestError) { }
+
+
     // Transition navigations -----------------------------------------------
 
     // Provides serialized markup of transition elements for use in the following navigation.
     virtual void addNavigationTransitionData(const WebString& allowedDestinationOrigin, const WebString& selector, const WebString& markup) { }
 
 
     // Web Notifications ---------------------------------------------------
 
     // Requests permission to display platform notifications on the origin of this frame.
     virtual void requestNotificationPermission(const WebSecurityOrigin&, WebNotificationPermissionCallback* callback) { }
@@ skipping 242 matching lines @@
     // Access the embedder API for (client-based) screen orientation client .
     virtual WebScreenOrientationClient* webScreenOrientationClient() { return 0; }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif