Migrate addMessageToConsole API to WebFrameClient.

public/web/WebFrameClient.h

Index: public/web/WebFrameClient.h
diff --git a/public/web/WebFrameClient.h b/public/web/WebFrameClient.h
index 77948f1439c272fd0774194d4b92245b13138046..863842dbdaf9f384771ea1b2afd4c07e18066844 100644
--- a/public/web/WebFrameClient.h
+++ b/public/web/WebFrameClient.h
@@ -74,6 +74,7 @@ class WebURL;
 class WebURLLoader;
 class WebURLResponse;
 class WebWorkerPermissionClientProxy;
+struct WebConsoleMessage;
 struct WebContextMenuData;
 struct WebPluginParams;
 struct WebRect;
@@ -147,6 +148,14 @@ public:
     // Called when a watched CSS selector matches or stops matching.
     virtual void didMatchCSS(WebLocalFrame*, const WebVector<WebString>& newlyMatchingSelectors, const WebVector<WebString>& stoppedMatchingSelectors) { }
 
+    // Console messages ----------------------------------------------------
+
+    // Whether or not we should report a detailed message for the given source.
+    virtual bool shouldReportDetailedMessageForSource(const WebString& source) { return false; }
+
+    // A new message was added to the console.
+    virtual void didAddMessageToConsole(const WebConsoleMessage&, const WebString& sourceName, unsigned sourceLine, const WebString& stackTrace) { }
+
     // Load commands -------------------------------------------------------
 
     // The client should handle the navigation externally.