Merge from master

Author: vatsan-madhavan

eng/Versions.props

@@ -2,7 +2,7 @@
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <VersionPrefix>4.8.0</VersionPrefix>
-    <PreReleaseVersionLabel>preview7</PreReleaseVersionLabel>
+    <PreReleaseVersionLabel>preview8</PreReleaseVersionLabel>
     <AssemblyVersion>4.0.0.0</AssemblyVersion>
     <SystemIOPackagingVersion>4.6.0-preview7.19320.1</SystemIOPackagingVersion>
   </PropertyGroup>

src/Microsoft.DotNet.Wpf/src/Common/Graphics/exports.cs

@@ -25,7 +25,6 @@
 using System.Diagnostics;
 using System.Collections.Generic;
 using System.Security;
-using System.Security.Permissions;
 using Microsoft.Win32.SafeHandles;
 
 using UnsafeNativeMethods=MS.Win32.PresentationCore.UnsafeNativeMethods;

src/Microsoft.DotNet.Wpf/src/Common/Graphics/wgx_exports.cs

@@ -11,7 +11,6 @@
 using System.Runtime.InteropServices;
 
 using System.Security;
-using System.Security.Permissions;
 using MS.Internal.PresentationCore;
 
 namespace MS.Internal

src/Microsoft.DotNet.Wpf/src/Common/Graphics/wgx_render.cs

@@ -10,7 +10,6 @@
 using System.Runtime.InteropServices;
 using System.Windows.Media;
 using System.Security;
-using System.Security.Permissions;
 using SR=MS.Internal.PresentationCore.SR;
 using SRID=MS.Internal.PresentationCore.SRID;
 

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/CPP/DWriteWrapper/Common.h

@@ -8,7 +8,6 @@
 #include "precomp.hxx"
 
 using namespace System::Security;
-using namespace System::Security::Permissions;
 
 namespace MS { namespace Internal { namespace Text { namespace TextInterface { namespace Native
 {    
@@ -95,27 +94,8 @@ private ref class Util sealed
     /// </summary>
     static bool IsFullTrustCaller()
     {
-#ifndef _CLR_NETCORE
-        try
-        {
-            if (_fullTrustPermissionSet == nullptr)
-            {
-                _fullTrustPermissionSet = gcnew PermissionSet(PermissionState::Unrestricted);
-            }
-            _fullTrustPermissionSet->Demand();
-        }
-        catch (SecurityException^)
-        {
-            return false;
-        }
-#endif
         return true;
     }
-
-#ifndef _CLR_NETCORE
-private:
-    static PermissionSet^ _fullTrustPermissionSet = nullptr;
-#endif 
 };
 
 #define ConvertHresultToException(hr, msg) Native::Util::ConvertHresultToException(hr)

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/CPP/DWriteWrapper/Factory.cpp

@@ -9,7 +9,6 @@
 using namespace System::Runtime::InteropServices;
 using namespace MS::Internal::Text::TextInterface::Interfaces;
 #ifndef _CLR_NETCORE
-using namespace System::Security::Permissions;
 #endif
 using namespace System::Threading;
 

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/CPP/DWriteWrapper/FontFile.cpp

@@ -5,7 +5,6 @@
 #include "FontFile.h"
 #include "DWriteTypeConverter.h"
 
-using namespace System::Security::Permissions;
 
 namespace MS { namespace Internal { namespace Text { namespace TextInterface
 {

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/CPP/DWriteWrapper/ItemProps.h

@@ -10,7 +10,6 @@
 #include "NativePointerWrapper.h"
 
 using namespace System::Security;
-using namespace System::Security::Permissions;
 using namespace MS::Internal::Text::TextInterface::Generics;
 
 namespace MS { namespace Internal { namespace Text { namespace TextInterface

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/CPP/TrueTypeSubsetter/TtfDelta/ttmem.cpp

@@ -21,7 +21,6 @@
 #include "fsassert.h"
 
 using namespace System::Security;
-using namespace System::Security::Permissions;
 
 void * Mem_Alloc(size_t size)
 {

src/Microsoft.DotNet.Wpf/src/DirectWriteForwarder/main.cpp

@@ -23,7 +23,6 @@ using namespace System::Reflection;
 using namespace System::Runtime::CompilerServices;
 using namespace System::Runtime::InteropServices;
 using namespace System::Security;
-using namespace System::Security::Permissions;
 using namespace System::Diagnostics;
 
 [assembly:DependencyAttribute("System,", LoadHint::Always)];