diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/src/gpu/gl/angle/SkANGLEGLContext.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,113 @@
+
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gl/SkANGLEGLContext.h"
+
+SkANGLEGLContext::AutoContextRestore::AutoContextRestore() {
+    fOldEGLContext = eglGetCurrentContext();
+    fOldDisplay = eglGetCurrentDisplay();
+    fOldSurface = eglGetCurrentSurface(EGL_DRAW);
+
+}
+
+SkANGLEGLContext::AutoContextRestore::~AutoContextRestore() {
+    if (NULL != fOldDisplay) {
+        eglMakeCurrent(fOldDisplay, fOldSurface, fOldSurface, fOldEGLContext);
+    }
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+SkANGLEGLContext::SkANGLEGLContext()
+    : fContext(EGL_NO_CONTEXT)
+    , fDisplay(EGL_NO_DISPLAY)
+    , fSurface(EGL_NO_SURFACE) {
+}
+
+SkANGLEGLContext::~SkANGLEGLContext() {
+    this->destroyGLContext();
+}
+
+void SkANGLEGLContext::destroyGLContext() {
+    if (fDisplay) {
+        eglMakeCurrent(fDisplay, 0, 0, 0);
+
+        if (fContext) {
+            eglDestroyContext(fDisplay, fContext);
+            fContext = EGL_NO_CONTEXT;
+        }
+
+        if (fSurface) {
+            eglDestroySurface(fDisplay, fSurface);
+            fSurface = EGL_NO_SURFACE;
+        }
+
+        //TODO should we close the display?
+        fDisplay = EGL_NO_DISPLAY;
+    }
+}
+
+const GrGLInterface* SkANGLEGLContext::createGLContext() {
+
+    fDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+
+    EGLint majorVersion;
+    EGLint minorVersion;
+    eglInitialize(fDisplay, &majorVersion, &minorVersion);
+
+    EGLint numConfigs;
+    static const EGLint configAttribs[] = {
+        EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+        EGL_RED_SIZE, 8,
+        EGL_GREEN_SIZE, 8,
+        EGL_BLUE_SIZE, 8,
+        EGL_ALPHA_SIZE, 8,
+        EGL_NONE
+    };
+
+    EGLConfig surfaceConfig;
+    eglChooseConfig(fDisplay, configAttribs, &surfaceConfig, 1, &numConfigs);
+
+    static const EGLint contextAttribs[] = {
+        EGL_CONTEXT_CLIENT_VERSION, 2,
+        EGL_NONE
+    };
+    fContext = eglCreateContext(fDisplay, surfaceConfig, NULL, contextAttribs);
+
+
+    static const EGLint surfaceAttribs[] = {
+            EGL_WIDTH, 1,
+            EGL_HEIGHT, 1,
+            EGL_NONE
+        };
+    fSurface = eglCreatePbufferSurface(fDisplay, surfaceConfig, surfaceAttribs);
+
+    eglMakeCurrent(fDisplay, fSurface, fSurface, fContext);
+
+    const GrGLInterface* interface = GrGLCreateANGLEInterface();
+    if (NULL == interface) {
+        SkDebugf("Could not create ANGLE GL interface!\n");
+        this->destroyGLContext();
+        return NULL;
+    }
+
+    return interface;
+}
+
+void SkANGLEGLContext::makeCurrent() const {
+    if (!eglMakeCurrent(fDisplay, fSurface, fSurface, fContext)) {
+        SkDebugf("Could not set the context.\n");
+    }
+}
+
+void SkANGLEGLContext::swapBuffers() const {
+    if (!eglSwapBuffers(fDisplay, fSurface)) {
+        SkDebugf("Could not complete eglSwapBuffers.\n");
+    }
+}