Unify wgl context creation.

src/gpu/gl/win/SkNativeGLContext_win.cpp

Index: src/gpu/gl/win/SkNativeGLContext_win.cpp
===================================================================
--- src/gpu/gl/win/SkNativeGLContext_win.cpp	(revision 7977)
+++ src/gpu/gl/win/SkNativeGLContext_win.cpp	(working copy)
@@ -7,6 +7,7 @@
  */
 
 #include "gl/SkNativeGLContext.h"
+#include "SkWGL.h"
 
 #define WIN32_LEAN_AND_MEAN
 #include <Windows.h>
@@ -49,67 +50,14 @@
 const GrGLInterface* SkNativeGLContext::createGLContext() {
     HINSTANCE hInstance = (HINSTANCE)GetModuleHandle(NULL);
 
-    if (!gWC) {
-        WNDCLASS wc;
-        wc.cbClsExtra = 0;
-        wc.cbWndExtra = 0;
-        wc.hbrBackground = NULL;
-        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
-        wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
-        wc.hInstance = hInstance;
-        wc.lpfnWndProc = (WNDPROC) DefWindowProc;
-        wc.lpszClassName = TEXT("Griffin");
-        wc.lpszMenuName = NULL;
-        wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
 
-        gWC = RegisterClass(&wc);
-        if (!gWC) {
-            SkDebugf("Could not register window class.\n");
-            return NULL;
-        }
-    }
-
-    if (!(fWindow = CreateWindow(TEXT("Griffin"),
-                                 TEXT("The Invisible Man"),
-                                 WS_OVERLAPPEDWINDOW,
-                                 0, 0, 1, 1,
-                                 NULL, NULL,
-                                 hInstance, NULL))) {
-        SkDebugf("Could not create window.\n");
-        return NULL;
-    }
-
     if (!(fDeviceContext = GetDC(fWindow))) {
         SkDebugf("Could not get device context.\n");
         this->destroyGLContext();
         return NULL;
     }
 
-    PIXELFORMATDESCRIPTOR pfd;
-    ZeroMemory(&pfd, sizeof(pfd));
-    pfd.nSize = sizeof(pfd);
-    pfd.nVersion = 1;
-    pfd.dwFlags = PFD_SUPPORT_OPENGL;
-    pfd.iPixelType = PFD_TYPE_RGBA;
-    pfd.cColorBits = 32;
-    pfd.cDepthBits = 0;
-    pfd.cStencilBits = 0;
-    pfd.iLayerType = PFD_MAIN_PLANE;
-
-    int pixelFormat = 0;
-    if (!(pixelFormat = ChoosePixelFormat(fDeviceContext, &pfd))) {
-        SkDebugf("No matching pixel format descriptor.\n");
-        this->destroyGLContext();
-        return NULL;
-    }
-
-    if (!SetPixelFormat(fDeviceContext, pixelFormat, &pfd)) {
-        SkDebugf("Could not set the pixel format %d.\n", pixelFormat);
-        this->destroyGLContext();
-        return NULL;
-    }
-
-    if (!(fGlRenderContext = wglCreateContext(fDeviceContext))) {
+    if (!(fGlRenderContext = SkCreateWGLContext(fDeviceContext, 0, true))) {
         SkDebugf("Could not create rendering context.\n");
         this->destroyGLContext();
         return NULL;