Move download messages from Renderer to Frame filter.

third_party/WebKit/public/web/WebViewClient.h

Index: third_party/WebKit/public/web/WebViewClient.h
diff --git a/third_party/WebKit/public/web/WebViewClient.h b/third_party/WebKit/public/web/WebViewClient.h
index 48dec294fec51b1cfd16e2a221c23c86132baba0..c26b7d0a818223a2dbc3f770770d7119d3a7f3e3 100644
--- a/third_party/WebKit/public/web/WebViewClient.h
+++ b/third_party/WebKit/public/web/WebViewClient.h
@@ -107,10 +107,6 @@ public:
     // will never be called.
     virtual bool enumerateChosenDirectory(const WebString& path, WebFileChooserCompletion*) { return false; }
 
-    // This method is called in response to WebView's saveImageAt(x, y).
-    // A data url from <canvas> or <img> is passed to the method's argument.
-    virtual void saveImageFromDataURL(const WebString&) { }
-
     // Called when PageImportanceSignals for the WebView is updated.
     virtual void pageImportanceSignalsChanged() { }