gpu: Add CHROMIUM_texture_from_image spec and fence support.

ui/gl/gl_image_stub.cc

Index: ui/gl/gl_image_stub.cc
diff --git a/ui/gl/gl_image_stub.cc b/ui/gl/gl_image_stub.cc
index 5bfd62be2f7669db55a90c6e3f4892ee4a576233..d8fe474c28345991e7f5b623143b37adbf182c2d 100644
--- a/ui/gl/gl_image_stub.cc
+++ b/ui/gl/gl_image_stub.cc
@@ -18,7 +18,9 @@ gfx::Size GLImageStub::GetSize() {
 
 unsigned GLImageStub::GetInternalFormat() { return GL_RGBA; }
 
-bool GLImageStub::BindTexImage(unsigned target) { return true; }
+bool GLImageStub::BindTexImage(unsigned target, GLFence* fence) {
+  return true;
+}
 
 bool GLImageStub::CopyTexImage(unsigned target) {
   return true;