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

public/web/WebFrame.h

Index: public/web/WebFrame.h
diff --git a/public/web/WebFrame.h b/public/web/WebFrame.h
index e6a61f4fd63fdfaa203f4f58059d13ede80fd9fe..0c630d447a23faef857a434de22349b4286eb6d2 100644
--- a/public/web/WebFrame.h
+++ b/public/web/WebFrame.h
@@ -70,6 +70,7 @@ class WebFrameClient;
 class WebInputElement;
 class WebLayer;
 class WebLocalFrame;
+class WebManifestRequest;
 class WebPerformance;
 class WebPermissionClient;
 class WebRange;
@@ -672,6 +673,12 @@ public:
     // Dumps the layer tree, used by the accelerated compositor, in
     // text form. This is used only by layout tests.
     virtual WebString layerTreeAsText(bool showDebugInfo = false) const = 0;
+    //
+    // Manifest ------------------------------------------------------------
+
+    // Starts fetching and parsing the manifest. The passed WebManifestRequest
+    // will get notified when the request ends, whether it failed or succeeded.
+    virtual void requestManifest(WebManifestRequest&) const = 0;

[dcheng, 2014/07/28 17:08:58]

Please move this interface method to WebLocalFrame.h, as I don't think this will
ever be implemented for WebRemoteFrame.

[mlamouri (slow - plz ping), 2014/08/19 16:14:18]

Done.

 
 #if BLINK_IMPLEMENTATION
     static WebFrame* fromFrame(blink::Frame*);