Move GPU fences into sk_gpu_test

tools/gpu/gl/GLTestContext.cpp

Index: tools/gpu/gl/GLTestContext.cpp
diff --git a/tools/gpu/gl/GLTestContext.cpp b/tools/gpu/gl/GLTestContext.cpp
index 68980922cdc4c986ef1c3fae325a2ec6dfd9a8bf..cb5f42540573851dfce4b4ab5c5e075dce19a9bc 100644
--- a/tools/gpu/gl/GLTestContext.cpp
+++ b/tools/gpu/gl/GLTestContext.cpp
@@ -6,36 +6,11 @@
  */
 
 #include "GLTestContext.h"
+
+#include "GLFenceSync.h"
 #include "gl/GrGLUtil.h"
 
 namespace sk_gpu_test {
-class GLTestContext::GLFenceSync : public SkGpuFenceSync {
-public:
-    static GLFenceSync* CreateIfSupported(const GLTestContext*);
-
-    SkPlatformGpuFence SK_WARN_UNUSED_RESULT insertFence() const override;
-    bool waitFence(SkPlatformGpuFence fence) const override;
-    void deleteFence(SkPlatformGpuFence fence) const override;
-
-private:
-    GLFenceSync() {}
-
-    static const GrGLenum GL_SYNC_GPU_COMMANDS_COMPLETE  = 0x9117;
-    static const GrGLenum GL_WAIT_FAILED                 = 0x911d;
-    static const GrGLbitfield GL_SYNC_FLUSH_COMMANDS_BIT = 0x00000001;
-
-    typedef struct __GLsync *GLsync;
-
-    typedef GLsync (GR_GL_FUNCTION_TYPE* GLFenceSyncProc) (GrGLenum, GrGLbitfield);
-    typedef GrGLenum (GR_GL_FUNCTION_TYPE* GLClientWaitSyncProc) (GLsync, GrGLbitfield, GrGLuint64);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GLDeleteSyncProc) (GLsync);
-
-    GLFenceSyncProc        fGLFenceSync;
-    GLClientWaitSyncProc   fGLClientWaitSync;
-    GLDeleteSyncProc       fGLDeleteSync;
-
-    typedef SkGpuFenceSync INHERITED;
-};
 
 GLTestContext::GLTestContext() : TestContext() {}
 
@@ -43,7 +18,7 @@ GLTestContext::~GLTestContext() {
     SkASSERT(nullptr == fGL.get());
 }
 
-void GLTestContext::init(const GrGLInterface* gl, SkGpuFenceSync* fenceSync) {
+void GLTestContext::init(const GrGLInterface* gl, FenceSync* fenceSync) {
     SkASSERT(!fGL.get());
     fGL.reset(gl);
     fFenceSync = fenceSync ? fenceSync : GLFenceSync::CreateIfSupported(this);
@@ -73,55 +48,6 @@ void GLTestContext::finish() {
     }
 }
 
-GLTestContext::GLFenceSync* GLTestContext::GLFenceSync::CreateIfSupported(const GLTestContext* ctx) {
-    SkAutoTDelete<GLFenceSync> ret(new GLFenceSync);
-
-    if (kGL_GrGLStandard == ctx->gl()->fStandard) {
-        const GrGLubyte* versionStr;
-        GR_GL_CALL_RET(ctx->gl(), versionStr, GetString(GR_GL_VERSION));
-        GrGLVersion version = GrGLGetVersionFromString(reinterpret_cast<const char*>(versionStr));
-        if (version < GR_GL_VER(3,2) && !ctx->gl()->hasExtension("GL_ARB_sync")) {
-            return nullptr;
-        }
-        ret->fGLFenceSync = reinterpret_cast<GLFenceSyncProc>(
-            ctx->onPlatformGetProcAddress("glFenceSync"));
-        ret->fGLClientWaitSync = reinterpret_cast<GLClientWaitSyncProc>(
-            ctx->onPlatformGetProcAddress("glClientWaitSync"));
-        ret->fGLDeleteSync = reinterpret_cast<GLDeleteSyncProc>(
-            ctx->onPlatformGetProcAddress("glDeleteSync"));
-    } else {
-        if (!ctx->gl()->hasExtension("GL_APPLE_sync")) {
-            return nullptr;
-        }
-        ret->fGLFenceSync = reinterpret_cast<GLFenceSyncProc>(
-            ctx->onPlatformGetProcAddress("glFenceSyncAPPLE"));
-        ret->fGLClientWaitSync = reinterpret_cast<GLClientWaitSyncProc>(
-            ctx->onPlatformGetProcAddress("glClientWaitSyncAPPLE"));
-        ret->fGLDeleteSync = reinterpret_cast<GLDeleteSyncProc>(
-            ctx->onPlatformGetProcAddress("glDeleteSyncAPPLE"));
-    }
-
-    if (!ret->fGLFenceSync || !ret->fGLClientWaitSync || !ret->fGLDeleteSync) {
-        return nullptr;
-    }
-
-    return ret.release();
-}
-
-SkPlatformGpuFence GLTestContext::GLFenceSync::insertFence() const {
-    return fGLFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
-}
-
-bool GLTestContext::GLFenceSync::waitFence(SkPlatformGpuFence fence) const {
-    GLsync glsync = static_cast<GLsync>(fence);
-    return GL_WAIT_FAILED != fGLClientWaitSync(glsync, GL_SYNC_FLUSH_COMMANDS_BIT, -1);
-}
-
-void GLTestContext::GLFenceSync::deleteFence(SkPlatformGpuFence fence) const {
-    GLsync glsync = static_cast<GLsync>(fence);
-    fGLDeleteSync(glsync);
-}
-
 GrGLint GLTestContext::createTextureRectangle(int width, int height, GrGLenum internalFormat,
                                           GrGLenum externalFormat, GrGLenum externalType,
                                           GrGLvoid* data) {