gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type.

ui/gl/gl_image_mac.cc

Index: ui/gl/gl_image_mac.cc
diff --git a/ui/gl/gl_image_mac.cc b/ui/gl/gl_image_mac.cc
index a48047fb1b9d5e34a0d802e2e245ebe1e230f0f4..ef0e0e9f5d0ad4551af834ccef451c3f9bac3849 100644
--- a/ui/gl/gl_image_mac.cc
+++ b/ui/gl/gl_image_mac.cc
@@ -12,21 +12,6 @@
 
 namespace gfx {
 
-scoped_refptr<GLImage> GLImage::CreateGLImage(gfx::PluginWindowHandle window) {
-  TRACE_EVENT0("gpu", "GLImage::CreateGLImage");
-  switch (GetGLImplementation()) {
-    case kGLImplementationOSMesaGL:
-    case kGLImplementationDesktopGL:
-    case kGLImplementationAppleGL:
-      return NULL;
-    case kGLImplementationMockGL:
-      return new GLImageStub;
-    default:
-      NOTREACHED();
-      return NULL;
-  }
-}
-
 scoped_refptr<GLImage> GLImage::CreateGLImageForGpuMemoryBuffer(
     gfx::GpuMemoryBufferHandle buffer,
     gfx::Size size,