Add System.Xml ref assembly (#12017)

* Add System.Xml.Schema and initial Core types in System.Xml.RW contract

* Change XmlException to inherit from SystemException instead of Exception

* Add System.Xml.Xsl in System.Xml.RW contract

* Update System.Xml.XmlDocument and System.Xml.XmlSerializer

* Update System.Xml.XPath and System.Xml.Serialization

* Add remaining types in System.Xml.RW and remove System.Xml.Xsl.Runtime namespace (not supposed to be in netstandard2.0)

* Update System.Xml.XDocument and System.Private.Xml.Linq

* Fix Schema and Xslt test builds

* Replace csproj references with pkgproj in Xml test projects

* Update dependencies

* Fix TestTFM default conditions bug in dir.props

* Fix merge conflict leftover

* Fix build and Remove unused workaround files

* Revert dir.props changes

* Address feedback

* Make final changes for Xml surface area to match that of netstandard2.0

* Add few comments and add P2P references for System.Net.Requests temporarily

5 files changed, 9 insertions, 12 deletions

diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXmlCache.cs b/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXmlCache.cs
index 32086f4416..ef551cd67b 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXmlCache.cs
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXmlCache.cs
@@ -1328,7 +1328,7 @@ public class ChecksumWriter : TextWriter
         _nPosition++;
     }
 
-    public void Close()
+    override public void Close()
     {
         _nPosition = 0;
         _dResult = 0;
@@ -1418,7 +1418,7 @@ public class BufferWriter : TextWriter
         _rgchBuffer[_nBufferUsed++] = ch;
     }
 
-    public void Close()
+    override public void Close()
     {
         //Set nBufferUsed to 0, so we start writing from the beginning of the buffer.
         _nBufferUsed = 0;
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXslTransform.cs b/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXslTransform.cs
index ddbc0b3d45..ef7617626e 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXslTransform.cs
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/CXslTransform.cs
@@ -8,7 +8,6 @@ using System;
 using System.Collections;
 using System.IO;
 using System.Security;
-using System.Security.Policy;
 using System.Xml;
 using System.Xml.XPath;
 using System.Xml.Xsl;
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/System.Xml.Xsl.XslTransformApi.Tests.csproj b/src/System.Private.Xml/tests/Xslt/XslTransformApi/System.Xml.Xsl.XslTransformApi.Tests.csproj
index 8ce0c5190c..db201b1af2 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/System.Xml.Xsl.XslTransformApi.Tests.csproj
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/System.Xml.Xsl.XslTransformApi.Tests.csproj
@@ -8,7 +8,7 @@
     <OutputType>Library</OutputType>
     <AssemblyName>System.Xml.Xsl.XslTransformApi.Tests</AssemblyName>
     <RootNamespace>System.Xml.Tests</RootNamespace>
-    <NuGetTargetMoniker>.NETStandard,Version=v1.3</NuGetTargetMoniker>
+    <NuGetTargetMoniker>.NETStandard,Version=v1.7</NuGetTargetMoniker>
     <KeepAllProjectReferences>true</KeepAllProjectReferences>
   </PropertyGroup>
   <!-- Default configurations to help VS understand the configurations -->
@@ -40,8 +40,8 @@
     <ProjectReference Include="$(CommonTestPath)\System\Xml\ModuleCore\ModuleCore.csproj" />
     <ProjectReference Include="$(CommonTestPath)\System\Xml\XmlCoreTest\XmlCoreTest.csproj" />
     <ProjectReference Include="$(CommonTestPath)\System\Xml\xmlDiff\XmlDiff.csproj" />
-    <ProjectReference Include="..\..\..\src\System.Private.Xml.csproj" />
-    <ProjectReference Include="..\..\..\..\System.Xml.ReaderWriter\src\System.Xml.ReaderWriter.csproj" />
+    <ProjectReference Include="..\..\..\..\System.Xml.ReaderWriter\pkg\System.Xml.ReaderWriter.pkgproj" />
+    <ProjectReference Include="..\..\..\..\System.Xml.XPath\pkg\System.Xml.XPath.pkgproj" />
   </ItemGroup>
   <ItemGroup>
     <None Include="project.json" />
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/XSLTransform.cs b/src/System.Private.Xml/tests/Xslt/XslTransformApi/XSLTransform.cs
index 6c677f36d4..be9b075461 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/XSLTransform.cs
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/XSLTransform.cs
@@ -7,7 +7,6 @@ using Xunit.Abstractions;
 using System;
 using System.IO;
 using System.Net;
-using System.Security.Policy;
 using System.Text;
 using System.Xml;
 using System.Xml.XmlDiff;
diff --git a/src/System.Private.Xml/tests/Xslt/XslTransformApi/project.json b/src/System.Private.Xml/tests/Xslt/XslTransformApi/project.json
index 18b49bd6e6..079209ca22 100644
--- a/src/System.Private.Xml/tests/Xslt/XslTransformApi/project.json
+++ b/src/System.Private.Xml/tests/Xslt/XslTransformApi/project.json
@@ -3,6 +3,7 @@
     "Microsoft.NETCore.Platforms": "1.0.2-beta-24522-03",
     "System.Collections.NonGeneric": "4.3.0-beta-24522-03",
     "System.Collections.Specialized": "4.3.0-beta-24522-03",
+    "System.Globalization": "4.3.0-beta-24522-03",
     "System.IO": "4.3.0-beta-24522-03",
     "System.IO.FileSystem": "4.3.0-beta-24522-03",
     "System.IO.FileSystem.Primitives": "4.3.0-beta-24522-03",
@@ -14,6 +15,7 @@
     "System.Reflection.TypeExtensions": "4.3.0-beta-24522-03",
     "System.Runtime": "4.3.0-beta-24522-03",
     "System.Runtime.Extensions": "4.3.0-beta-24522-03",
+    "System.Text.Encoding": "4.3.0-beta-24522-03",
     "System.Threading": "4.3.0-beta-24522-03",
     "System.Threading.Thread": "4.3.0-beta-24522-03",
     "System.Threading.Tasks": "4.3.0-beta-24522-03",
@@ -25,13 +27,10 @@
     "Microsoft.DotNet.BuildTools.TestSuite": "1.0.0-prerelease-00807-03"
   },
   "frameworks": {
-    "netstandard1.3": {}
+    "netstandard1.7": {}
   },
   "supports": {
-    "coreFx.Test.netcoreapp1.0": {},
-    "coreFx.Test.net46": {},
-    "coreFx.Test.net461": {},
-    "coreFx.Test.net462": {},
+    "coreFx.Test.netcoreapp1.1": {},
     "coreFx.Test.net463": {}
   }
 }