Move SkGLContext and some GrGLInterface implementations to skgputest module

cmake/CMakeLists.txt

 # Boilerplate.
 cmake_minimum_required (VERSION 3.1)   # First version with CMAKE_CXX_STANDARD.
 project (skimake)
 set (CMAKE_CXX_STANDARD 11)
 
 # Default to Release mode.  We're mainly targeting Skia users, not Skia developers.
 if (NOT CMAKE_BUILD_TYPE)
     set (CMAKE_BUILD_TYPE Release)
 endif ()
 
@@ skipping 72 matching lines @@
 if (NOT CMAKE_SYSTEM_PROCESSOR STREQUAL MIPS)
     remove_srcs(../src/*mips* ../src/*MIPS*)
 endif()
 
 # Make our ports choices.
 remove_srcs(
     ../src/*moz*   # We're probably not Mozilla.
     ../src/gpu/GrContextFactory.cpp                  # For internal testing only.
     ../src/gpu/gl/GrGLCreateNativeInterface_none.cpp
     ../src/gpu/gl/GrGLDefaultInterface_none.cpp
-    ../src/gpu/gl/SkCreatePlatformGLContext*.cpp     # For internal testing only.
     ../src/gpu/gl/command_buffer/*
     ../src/gpu/gl/egl/*
     ../src/gpu/gl/glfw/*
     ../src/gpu/gl/iOS/*
     ../src/gpu/vk/*
     ../src/opts/SkBitmapProcState_opts_none.cpp
     ../src/opts/SkBlitMask_opts_none.cpp
     ../src/opts/SkBlitRow_opts_none.cpp
     ../src/ports/SkFontMgr_empty_factory.cpp
     ../src/ports/SkGlobalInitialization_chromium.cpp
@@ skipping 10 matching lines @@
 endif()
 
 if (WIN32)
     if(SKIA_GDI)
         remove_srcs(../src/ports/SkFontMgr_win_dw_factory.cpp)
     else()
         remove_srcs(../src/ports/SkFontMgr_win_gdi_factory.cpp)
     endif()
 endif()
 
-remove_srcs(../src/gpu/gl/angle/*)  # TODO
-
 # Certain files must be compiled with support for SSSE3, SSE4.1, AVX, or AVX2 intrinsics.
 file (GLOB_RECURSE ssse3_srcs ../src/*ssse3*.cpp ../src/*SSSE3*.cpp)
 file (GLOB_RECURSE sse41_srcs ../src/*sse4*.cpp ../src/*SSE4*.cpp)
 file (GLOB_RECURSE avx_srcs   ../src/*_avx.cpp)
 file (GLOB_RECURSE avx2_srcs  ../src/*_avx2.cpp)
 set_source_files_properties(${ssse3_srcs} PROPERTIES COMPILE_FLAGS -mssse3)
 set_source_files_properties(${sse41_srcs} PROPERTIES COMPILE_FLAGS -msse4.1)
 set_source_files_properties(${avx_srcs}   PROPERTIES COMPILE_FLAGS -mavx)
 set_source_files_properties(${avx2_srcs}  PROPERTIES COMPILE_FLAGS -mavx2)
 
@@ skipping 198 matching lines @@
         file (APPEND ${skia_h_path} "#include \"${filename_component}\"\n")
       endif ()
     endforeach()
   endif()
 endforeach()
 file(APPEND ${skia_h_path} "\n#endif  // skia_DEFINED\n")
 
 # Now build a simple example app that uses Skia via libskia.so.
 add_executable(example example.cpp)
 target_link_libraries(example skia ${OPENGL_LIBRARIES})