Rename CefSettings.ProductVersion to CefSettings.UserAgentProduct

This is a breaking change.

Resolves #3530

Author: amaitland

CefSharp.Core.Runtime/CefSettingsBase.h

@@ -277,13 +277,13 @@ namespace CefSharp
 
             /// <summary>
             /// Value that will be inserted as the product portion of the default User-Agent string. If empty the Chromium product version
-            /// will be used. If UserAgent is specified this value will be ignored. Also configurable using the "product-version" command-
+            /// will be used. If UserAgent is specified this value will be ignored. Also configurable using the "user-agent-product" command-
             /// line switch.
             /// </summary>
-            property String^ ProductVersion
+            property String^ UserAgentProduct
             {
-                String^ get() { return StringUtils::ToClr(_cefSettings->product_version); }
-                void set(String^ value) { StringUtils::AssignNativeFromClr(_cefSettings->product_version, value); }
+                String^ get() { return StringUtils::ToClr(_cefSettings->user_agent_product); }
+                void set(String^ value) { StringUtils::AssignNativeFromClr(_cefSettings->user_agent_product, value); }
             }
 
             /// <summary>

CefSharp.Core/CefSettingsBase.cs

@@ -244,13 +244,13 @@ public bool PackLoadingDisabled
 
         /// <summary>
         /// Value that will be inserted as the product portion of the default User-Agent string. If empty the Chromium product version
-        /// will be used. If UserAgent is specified this value will be ignored. Also configurable using the "product-version" command-
+        /// will be used. If UserAgent is specified this value will be ignored. Also configurable using the "user-agent-product" command-
         /// line switch.
         /// </summary>
-        public string ProductVersion
+        public string UserAgentProduct
         {
-            get { return settings.ProductVersion; }
-            set { settings.ProductVersion = value; }
+            get { return settings.UserAgentProduct; }
+            set { settings.UserAgentProduct = value; }
         }
 
         /// <summary>