Add more xml doc

Author: amaitland

CefSharp/IDownloadHandler.cs

@@ -4,6 +4,10 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Class used to handle file downloads.
+    /// The methods of this class will called on the CEF UI thread. 
+    /// </summary>
     public interface IDownloadHandler
     {
         /// <summary>

CefSharp/IFocusHandler.cs

@@ -4,6 +4,10 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to handle events related to focus.
+    /// The methods of this class will be called on the CEF UI thread. 
+    /// </summary>
     public interface IFocusHandler
     {
         /// <summary>

CefSharp/IJsDialogHandler.cs

@@ -4,6 +4,10 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to handle events related to JavaScript dialogs.
+    /// The methods of this class will be called on the CEF UI thread. 
+    /// </summary>
     public interface IJsDialogHandler
     {
         /// <summary>

CefSharp/IKeyboardHandler.cs

@@ -4,6 +4,9 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to handle events related to keyboard input.
+    /// </summary>
     public interface IKeyboardHandler
     {
         /// <summary>

CefSharp/ILifeSpanHandler.cs

@@ -4,6 +4,10 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to handle events related to browser life span.
+    /// The methods of this class will be called on the CEF UI thread unless otherwise indicated. 
+    /// </summary>
     public interface ILifeSpanHandler
     {
         /// <summary>

CefSharp/IMenuModel.cs

@@ -66,6 +66,7 @@ public interface IMenuModel
         /// </summary>
         /// <param name="commandId">the command Id</param>
         /// <param name="label">the label of the item</param>
+        /// <param name="groupId">the group id</param>
         /// <returns>Returns true on success.</returns>
         bool AddRadioItem(CefMenuCommand commandId, string label, int groupId);
 

CefSharp/IPluginHandler.cs

@@ -4,16 +4,19 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to cancel loading of specific plugins
+    /// </summary>
     public interface IPluginHandler
     {
         /// <summary>
-        /// Called on the browser process IO thread before a plugin instance is loaded.
+        /// Called on the CEF IO thread before a plugin instance is loaded.
         /// The default plugin policy can be set at runtime using the `--plugin-policy=[allow|detect|block]` command-line flag.
         /// </summary>
         /// <param name="mimeType">is the mime type of the plugin that will be loaded</param>
         /// <param name="url">is the content URL that the plugin will load and may be empty</param>
         /// <param name="topOriginUrl">is the URL for the top-level frame that contains the plugin</param>
-        /// <param name="info">includes additional information about the plugin that will be loaded</param>
+        /// <param name="pluginInfo">includes additional information about the plugin that will be loaded</param>
         /// <param name="pluginPolicy">Modify and return true to change the policy.</param>
         /// <returns>Return false to use the recommended policy. Modify and return true to change the policy.</returns>
         bool OnBeforePluginLoad(string mimeType, string url, string topOriginUrl, WebPluginInfo pluginInfo, ref PluginPolicy pluginPolicy);

CefSharp/IPrintToPdfCallback.cs

@@ -7,7 +7,7 @@
 namespace CefSharp
 {
     /// <summary>
-    /// Callback interface for <see cref="IBrowserHost.PrintToPDF"/>. The methods of this interface
+    /// Callback interface for <see cref="IBrowserHost.PrintToPdf"/>. The methods of this interface
     /// will be called on the CEF UI thread.
     /// </summary>
     public interface IPrintToPdfCallback : IDisposable

CefSharp/IRequestContext.cs

@@ -8,6 +8,17 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// A request context provides request handling for a set of related browser or URL request objects.
+    /// A request context can be specified when creating a new browser by setting the 
+    /// <see cref="IWebBrowser.RequestContext"/> property (Passing in via the constructor for the OffScreen
+    /// control is preferred).
+    /// Browser objects with different request contexts will never be hosted in the same render process.
+    /// Browser objects with the same request context may or may not be hosted in the same render process
+    /// depending on the process model.Browser objects created indirectly via the JavaScript window.open
+    /// function or targeted links will share the same render process and the same request context as
+    /// the source browser.
+    /// </summary>
     public interface IRequestContext : IDisposable
     {
         /// <summary>

CefSharp/IRequestHandler.cs

@@ -6,6 +6,10 @@
 
 namespace CefSharp
 {
+    /// <summary>
+    /// Implement this interface to handle events related to browser requests.
+    /// The methods of this class will be called on the thread indicated. 
+    /// </summary>
     public interface IRequestHandler
     {
         /// <summary>