Remaining XAML API summaries. (#813)

* Remaining XAML API summaries.

* update docs

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/AcceptEmptyServiceProviderAttribute.xml

@@ -15,8 +15,10 @@
     </Attribute>
   </Attributes>
   <Docs>
-    <summary>To be added.</summary>
-    <remarks>To be added.</remarks>
+    <summary>Tells the XAML parser and compiler that they may ignore supplied service providers in methods and constructors in the attributed class.</summary>
+    <remarks>
+      <para>Developers should note that this attribute does not guarantee that the parser will not pass <see langword="null" /> instead of a supplied service provider. It only allows that they may do so.</para>
+    </remarks>
   </Docs>
   <Members>
     <Member MemberName=".ctor">
@@ -28,7 +30,7 @@
       </AssemblyInfo>
       <Parameters />
       <Docs>
-        <summary>To be added.</summary>
+        <summary>Creates a new <see cref="T:Xamarin.Forms.Xaml.AcceptEmptyServiceProviderAttribute" /> with default values.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/IMarkupExtension`1.xml

@@ -20,7 +20,7 @@
   </Interfaces>
   <Docs>
     <typeparam name="T">To be added.</typeparam>
-    <summary>To be added.</summary>
+    <summary>Provides a base class for XAML markup extension implementations</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -40,8 +40,8 @@
       </Parameters>
       <Docs>
         <param name="serviceProvider">To be added.</param>
-        <summary>To be added.</summary>
-        <returns>To be added.</returns>
+        <summary>When implemented in a derived class, returns an object that is provided as the value of the target property for this markup extension.</summary>
+        <returns>The object that is provided as the value of the target property for this markup extension.</returns>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/IValueProvider.xml

@@ -8,7 +8,7 @@
   </AssemblyInfo>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>Interface for value providers.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -28,7 +28,7 @@
       </Parameters>
       <Docs>
         <param name="serviceProvider">To be added.</param>
-        <summary>To be added.</summary>
+        <summary>When implemented in a derived class, provides a value with the specified <paramref name="serviceProvider" />.</summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
       </Docs>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/IXamlTypeResolver.xml

@@ -60,7 +60,7 @@
       <Docs>
         <param name="qualifiedTypeName">To be added.</param>
         <param name="serviceProvider">To be added.</param>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
       </Docs>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/IXmlLineInfoProvider.xml

@@ -8,7 +8,7 @@
   </AssemblyInfo>
   <Interfaces />
   <Docs>
-    <summary>To be added.</summary>
+    <summary>For internal use by the XAML engine.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -24,7 +24,7 @@
         <ReturnType>System.Xml.IXmlLineInfo</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/XamlParseException.xml

@@ -31,7 +31,7 @@
       <Docs>
         <param name="message">To be added.</param>
         <param name="xmlInfo">To be added.</param>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -51,7 +51,7 @@
         <param name="message">To be added.</param>
         <param name="xmlInfo">To be added.</param>
         <param name="innerException">To be added.</param>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>

docs/Xamarin.Forms.Core/Xamarin.Forms.Xaml/XmlLineInfo.xml

@@ -15,7 +15,7 @@
     </Interface>
   </Interfaces>
   <Docs>
-    <summary>To be added.</summary>
+    <summary>For internal use by the XAML engine.</summary>
     <remarks>To be added.</remarks>
   </Docs>
   <Members>
@@ -29,7 +29,7 @@
       </AssemblyInfo>
       <Parameters />
       <Docs>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -48,7 +48,7 @@
       <Docs>
         <param name="linenumber">To be added.</param>
         <param name="lineposition">To be added.</param>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <remarks>To be added.</remarks>
       </Docs>
     </Member>
@@ -65,7 +65,7 @@
       </ReturnValue>
       <Parameters />
       <Docs>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <returns>To be added.</returns>
         <remarks>To be added.</remarks>
       </Docs>
@@ -82,7 +82,7 @@
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>
@@ -99,7 +99,7 @@
         <ReturnType>System.Int32</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>To be added.</summary>
+        <summary>For internal use by the XAML engine.</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>