Issue 351: Reimplement OAuth2 - Step 2 (Auth PCL - only data types)

Src/GoogleApis.Auth.DotNet4/GoogleApis.Auth.DotNet4.csproj

Index: Src/GoogleApis.Auth.DotNet4/GoogleApis.Auth.DotNet4.csproj
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new file mode 100644
--- /dev/null
 b/Src/GoogleApis.Auth.DotNet4/GoogleApis.Auth.DotNet4.csproj
@@ -0,0 1,115 @@
 <?xml version="1.0" encoding="utf-8"?>
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 <AppDesignerFolder>Properties</AppDesignerFolder>
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 <DefineConstants>TRACE</DefineConstants>
 <ErrorReport>prompt</ErrorReport>
 <WarningLevel>4</WarningLevel>
 <DocumentationFile>Google.Apis.Auth.PlatformServices.xml</DocumentationFile>
 </PropertyGroup>
 <ItemGroup>
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 </Reference>
 <Reference Include="Microsoft.Threading.Tasks.Extensions.Desktop">
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 </Reference>
 <Reference Include="Newtonsoft.Json">
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 </Reference>
 <Reference Include="System" />
 <Reference Include="System.Core" />
 <Reference Include="System.Net" />
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 </Reference>
 <Reference Include="System.Runtime">
 <HintPath>..\..\packages\Microsoft.Bcl.1.0.19\lib\net40\System.Runtime.dll</HintPath>
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 <Reference Include="System.Threading.Tasks">
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 <Reference Include="System.Xml.Linq" />
 <Reference Include="System.Data.DataSetExtensions" />
 <Reference Include="Microsoft.CSharp" />
 <Reference Include="System.Data" />
 <Reference Include="System.Xml" />
 </ItemGroup>
 <ItemGroup>
 <Compile Include="OAuth2\GoogleWebAuthenticationBroker.cs" />
 <Compile Include="OAuth2\LocalServerCodeReceiver.cs" />
 <Compile Include="OAuth2\PromptCodeReceiver.cs" />
 <Compile Include="OAuth2\ServiceAccountCredential.cs" />
 <Compile Include="Properties\AssemblyInfo.cs" />
 </ItemGroup>
 <ItemGroup>
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 </ItemGroup>
 <ItemGroup>
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 <Name>GoogleApis.Auth</Name>
 </ProjectReference>
 <ProjectReference Include="..\GoogleApis.DotNet4\GoogleApis.DotNet4.csproj">
 <Project>{c4da0abe-2c2e-4bb8-9881-5ff80b0c1afd}</Project>
 <Name>GoogleApis.DotNet4</Name>
 </ProjectReference>
 <ProjectReference Include="..\GoogleApis\GoogleApis.csproj">
 <Project>{826cf988-eee8-4b75-8f53-b7e851a17baa}</Project>
 <Name>GoogleApis</Name>
 </ProjectReference>
 </ItemGroup>
 <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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 <Target Name="EnsureBclBuildImported" BeforeTargets="BeforeBuild" Condition="'$(BclBuildImported)' == ''">
 <Error Condition="!Exists('..\..\packages\Microsoft.Bcl.Build.1.0.10\tools\Microsoft.Bcl.Build.targets')" Text="This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=317567." HelpKeyword="BCLBUILD2001" />
 <Error Condition="Exists('..\..\packages\Microsoft.Bcl.Build.1.0.10\tools\Microsoft.Bcl.Build.targets')" Text="The build restored NuGet packages. Build the project again to include these packages in the build. For more information, see http://go.microsoft.com/fwlink/?LinkID=317568." HelpKeyword="BCLBUILD2002" />
 </Target>
 <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
 Other similar extension points exist, see Microsoft.Common.targets.
 <Target Name="BeforeBuild">
 </Target>
 <Target Name="AfterBuild">
 </Target>
 -->
 </Project>