added did-navigate event, getFavicon api and workaround webview spec

atom/renderer/lib/web-view/guest-view-internal.coffee

@@ -7,6 +7,7 @@ WEB_VIEW_EVENTS =
   'did-finish-load': []
   'did-fail-load': ['errorCode', 'errorDescription']
   'did-frame-finish-load': ['isMainFrame']
+  'did-navigate': []
   'did-start-loading': []
   'did-stop-loading': []
   'did-get-response-details': ['status', 'newUrl', 'originalUrl',
@@ -18,7 +19,7 @@ WEB_VIEW_EVENTS =
   'crashed': []
   'destroyed': []
   'page-title-set': ['title', 'explicitSet']
-  'page-favicon-set': ['favicons']
+  'page-favicon-updated': ['favicons']
 
 dispatchEvent = (webView, event, args...) ->
   throw new Error("Unkown event #{event}") unless WEB_VIEW_EVENTS[event]?

atom/renderer/lib/web-view/web-view-attributes.coffee

@@ -154,6 +154,7 @@ class SrcAttribute extends WebViewAttribute
        not @.getValue()
       return
 
+    # Allow users to cancel webview navigation.
     domEvent = new Event('will-navigate')
     domEvent['url'] = @getValue()
     domEvent.cancelable = true

atom/renderer/lib/web-view/web-view.coffee

@@ -236,6 +236,7 @@ registerWebViewElement = ->
   methods = [
     "getUrl"
     "getTitle"
+    "getFavicon"
     "isLoading"
     "isWaitingForResponse"
     "stop"