Revert of Initial version of external_oes texture support and unit test

src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp

Index: src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
diff --git a/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp b/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
index 591cae349c0f8925b4697ad5f30f352890d125cc..d1335d355f56a7e535641e9cf660e738ad60a880 100644
--- a/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
+++ b/src/gpu/gl/egl/SkCreatePlatformGLContext_egl.cpp
@@ -13,9 +13,6 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
-#include "gl/GrGLDefines.h"
-#include "gl/GrGLUtil.h"
-
 namespace {
 
 // TODO: Share this class with ANGLE if/when it gets support for EGL_KHR_fence_sync.
@@ -39,11 +36,6 @@
 public:
     EGLGLContext(GrGLStandard forcedGpuAPI);
     ~EGLGLContext() override;
-
-    GrEGLImage texture2DToEGLImage(GrGLuint texID) const override;
-    void destroyEGLImage(GrEGLImage) const override;
-    GrGLuint eglImageToExternalTexture(GrEGLImage) const override;
-    SkGLContext* createNew() const override;
 
 private:
     void destroyGLContext();
@@ -208,57 +200,6 @@
     }
 }
 
-GrEGLImage EGLGLContext::texture2DToEGLImage(GrGLuint texID) const {
-    if (!this->gl()->hasExtension("EGL_KHR_gl_texture_2D_image")) {
-        return GR_EGL_NO_IMAGE;
-    }
-    GrEGLImage img;
-    GrEGLint attribs[] = { GR_EGL_GL_TEXTURE_LEVEL, 0, GR_EGL_NONE };
-    GrEGLClientBuffer clientBuffer = reinterpret_cast<GrEGLClientBuffer>(texID);
-    GR_GL_CALL_RET(this->gl(), img,
-                   EGLCreateImage(fDisplay, fContext, GR_EGL_GL_TEXTURE_2D, clientBuffer, attribs));
-    return img;
-}
-
-void EGLGLContext::destroyEGLImage(GrEGLImage image) const {
-    GR_GL_CALL(this->gl(), EGLDestroyImage(fDisplay, image));
-}
-
-GrGLuint EGLGLContext::eglImageToExternalTexture(GrEGLImage image) const {
-    GrGLClearErr(this->gl());
-    if (!this->gl()->hasExtension("GL_OES_EGL_image_external")) {
-        return 0;
-    }
-    GrGLEGLImageTargetTexture2DProc glEGLImageTargetTexture2D = 
-            (GrGLEGLImageTargetTexture2DProc) eglGetProcAddress("glEGLImageTargetTexture2DOES");
-    if (!glEGLImageTargetTexture2D) {
-        return 0;
-    }
-    GrGLuint texID;
-    glGenTextures(1, &texID);
-    if (!texID) {
-        return 0;
-    }
-    glBindTexture(GR_GL_TEXTURE_EXTERNAL, texID);
-    if (glGetError() != GR_GL_NO_ERROR) {
-        glDeleteTextures(1, &texID);
-        return 0;
-    }
-    glEGLImageTargetTexture2D(GR_GL_TEXTURE_EXTERNAL, image);
-    if (glGetError() != GR_GL_NO_ERROR) {
-        glDeleteTextures(1, &texID);
-        return 0;
-    }
-    return texID;
-}
-
-SkGLContext* EGLGLContext::createNew() const {
-    SkGLContext* ctx = SkCreatePlatformGLContext(this->gl()->fStandard);
-    if (ctx) {
-        ctx->makeCurrent();
-    }
-    return ctx;
-}
 
 void EGLGLContext::onPlatformMakeCurrent() const {
     if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {