make Grpc.Core nuget work for Xamarin.Forms

src/csharp/Grpc.Core/Grpc.Core.csproj

@@ -47,23 +47,23 @@
       <Pack>true</Pack>
     </Content>
     <Content Include="..\nativelibs\csharp_ext_linux_android_armeabi-v7a\libgrpc_csharp_ext.so">
-      <PackagePath>runtimes/monoandroid/armeabi-v7a/libgrpc_csharp_ext.so</PackagePath>
+      <PackagePath>native/android/armeabi-v7a/libgrpc_csharp_ext.so</PackagePath>
       <Pack>true</Pack>
     </Content>
     <Content Include="..\nativelibs\csharp_ext_linux_android_arm64-v8a\libgrpc_csharp_ext.so">
-      <PackagePath>runtimes/monoandroid/arm64-v8a/libgrpc_csharp_ext.so</PackagePath>
+      <PackagePath>native/android/arm64-v8a/libgrpc_csharp_ext.so</PackagePath>
       <Pack>true</Pack>
     </Content>
     <Content Include="..\nativelibs\csharp_ext_linux_android_x86\libgrpc_csharp_ext.so">
-      <PackagePath>runtimes/monoandroid/x86/libgrpc_csharp_ext.so</PackagePath>
+      <PackagePath>native/android/x86/libgrpc_csharp_ext.so</PackagePath>
       <Pack>true</Pack>
     </Content>
     <Content Include="..\nativelibs\csharp_ext_macos_ios\libgrpc_csharp_ext.a">
-      <PackagePath>runtimes/ios/native/libgrpc_csharp_ext.a</PackagePath>
+      <PackagePath>native/ios/universal/libgrpc_csharp_ext.a</PackagePath>
       <Pack>true</Pack>
     </Content>
     <Content Include="..\nativelibs\csharp_ext_macos_ios\libgrpc.a">
-      <PackagePath>runtimes/ios/native/libgrpc.a</PackagePath>
+      <PackagePath>native/ios/universal/libgrpc.a</PackagePath>
       <Pack>true</Pack>
     </Content>
     <Content Include="build\net45\Grpc.Core.targets">

src/csharp/Grpc.Core/build/MonoAndroid/Grpc.Core.targets

@@ -1,25 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup>
-    <_GrpcCoreNugetNativePath Condition="'$(_GrpcCoreNugetNativePath)' == ''">$(MSBuildThisFileDirectory)..\..\</_GrpcCoreNugetNativePath>
-  </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == 'MonoAndroid'">
-    <AndroidNativeLibrary Include="$(_GrpcCoreNugetNativePath)runtimes\monoandroid\arm64-v8a\libgrpc_csharp_ext.so">
+    <AndroidNativeLibrary Include="$(MSBuildThisFileDirectory)..\..\native\android\arm64-v8a\libgrpc_csharp_ext.so">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <Abi>arm64-v8a</Abi>
     </AndroidNativeLibrary>
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == 'MonoAndroid'">
-    <AndroidNativeLibrary Include="$(_GrpcCoreNugetNativePath)runtimes\monoandroid\armeabi-v7a\libgrpc_csharp_ext.so">
+    <AndroidNativeLibrary Include="$(MSBuildThisFileDirectory)..\..\native\android\armeabi-v7a\libgrpc_csharp_ext.so">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <Abi>armeabi-v7a</Abi>
     </AndroidNativeLibrary>
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFrameworkIdentifier)' == 'MonoAndroid'">
-    <AndroidNativeLibrary Include="$(_GrpcCoreNugetNativePath)runtimes\monoandroid\x86\libgrpc_csharp_ext.so">
+    <AndroidNativeLibrary Include="$(MSBuildThisFileDirectory)..\..\native\android\x86\libgrpc_csharp_ext.so">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <Abi>x86</Abi>
     </AndroidNativeLibrary>

src/csharp/Grpc.Core/build/Xamarin.iOS/Grpc.Core.targets

@@ -2,11 +2,11 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <ItemGroup>
-    <NativeReference Include="$(MSBuildThisFileDirectory)..\..\runtimes\ios\native\libgrpc_csharp_ext.a">
+    <NativeReference Include="$(MSBuildThisFileDirectory)..\..\native\ios\universal\libgrpc_csharp_ext.a">
       <Kind>Static</Kind>
       <ForceLoad>True</ForceLoad>
     </NativeReference>
-    <NativeReference Include="$(MSBuildThisFileDirectory)..\..\runtimes\ios\native\libgrpc.a">
+    <NativeReference Include="$(MSBuildThisFileDirectory)..\..\native\ios\universal\libgrpc.a">
       <Kind>Static</Kind>
       <ForceLoad>True</ForceLoad>
     </NativeReference>