command_buffer_gles2: Implement EGL default Display as a global object

gpu/gles2_conform_support/egl/surface.cc

Index: gpu/gles2_conform_support/egl/surface.cc
diff --git a/gpu/gles2_conform_support/egl/surface.cc b/gpu/gles2_conform_support/egl/surface.cc
index 423fe2756f65cb39f65ecff797ffdd3ec73919b6..5f5b4b3ff35b457cf9043db8edfba9a16d4c51ee 100644
--- a/gpu/gles2_conform_support/egl/surface.cc
+++ b/gpu/gles2_conform_support/egl/surface.cc
@@ -3,13 +3,44 @@
 // found in the LICENSE file.
 
 #include "gpu/gles2_conform_support/egl/surface.h"
+#include "ui/gl/gl_surface.h"
 
 namespace egl {
 
-Surface::Surface(EGLNativeWindowType win) : window_(win) {
-}
+Surface::Surface(gfx::GLSurface* gl_surface)
+    : is_current_in_some_thread_(false), gl_surface_(gl_surface) {}
 
 Surface::~Surface() {
 }
 
+gfx::GLSurface* Surface::gl_surface() const {
+  return gl_surface_.get();
+}
+
+bool Surface::ValidatePbufferAttributeList(const EGLint* attrib_list) {
+  if (attrib_list) {
+    for (int i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+      switch (attrib_list[i]) {
+        case EGL_WIDTH:
+        case EGL_HEIGHT:
+          break;
+        default:
+          return false;
+      }
+    }
+  }
+  return true;
+}
+
+bool Surface::ValidateWindowAttributeList(const EGLint* attrib_list) {
+  if (attrib_list) {
+    for (int i = 0; attrib_list[i] != EGL_NONE; i += 2) {
+      switch (attrib_list[i]) {
+        default:
+          return false;
+      }
+    }
+  }
+  return true;
+}
 }  // namespace egl