The Standard Shader (Roughness Setup) that was introduced in 2017.2 is not building for Android when using OpenGLES3.0 and the build fails with errors.

To reproduce:
1. Create a new project and set the platform to Android.
2. Create a new material and use the Standard (Roughness setup) shader option
3. Create a cube and assign the material to the cube.
4. Make sure that OpenGLES3.0 is selected as graphics API and build the project.

Actual Result: The build fails with the following errors

Shader error in 'Standard (Roughness setup)': 'RoughnessSetup_Reflectivity' : no matching overloaded function found at /UnityVersions/Unity 2017.2.0p1_PatchRelease/Editor/Data/CGIncludes/UnityStandardCoreForwardSimple.cginc(111) (on gles)

Compiling Vertex program with DIRECTIONAL
Platform defines: UNITY_NO_DXT5nm UNITY_NO_RGBM UNITY_ENABLE_REFLECTION_BUFFERS UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_NO_CUBEMAP_ARRAY UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF3 UNITY_NO_FULL_STANDARD_SHADER SHADER_API_MOBILE UNITY_HARDWARE_TIER1 UNITY_COLORSPACE_GAMMA

Shader error in 'Standard (Roughness setup)': undeclared identifier 'RoughnessSetup_Reflectivity' at /UnityVersions/Unity 2017.2.0p1_PatchRelease/Editor/Data/CGIncludes/UnityStandardCoreForwardSimple.cginc(111) (on gles3)

Compiling Vertex program with DIRECTIONAL
Platform defines: UNITY_NO_DXT5nm UNITY_NO_RGBM UNITY_ENABLE_REFLECTION_BUFFERS UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_NO_CUBEMAP_ARRAY UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF3 UNITY_NO_FULL_STANDARD_SHADER SHADER_API_MOBILE UNITY_HARDWARE_TIER1 UNITY_COLORSPACE_GAMMA

Shader error in 'Standard (Roughness setup)': undeclared identifier 'RoughnessSetup_Reflectivity' at /UnityVersions/Unity 2017.2.0p1_PatchRelease/Editor/Data/CGIncludes/UnityStandardCoreForwardSimple.cginc(111) (on vulkan)

Compiling Vertex program with DIRECTIONAL SHADOWS_SCREEN
Platform defines: UNITY_NO_DXT5nm UNITY_NO_RGBM UNITY_ENABLE_REFLECTION_BUFFERS UNITY_NO_CUBEMAP_ARRAY UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF3 UNITY_NO_FULL_STANDARD_SHADER SHADER_API_MOBILE UNITY_HARDWARE_TIER1 UNITY_COLORSPACE_GAMMA

Expected Result: There should be no errors and the build shouldn't fail.

Extra notes:
There are no build errors if OpenGLES2.0 or Vulkan is selected as Graphic API

Reproducible: 2017.2.0a4, 2017.2.0b1, 2017.2.0f3, 2017.2.0p1 and 2018.1.0a