Ozone integration.

ui/gl/gl_surface_osmesa.cc

Index: ui/gl/gl_surface_osmesa.cc
diff --git a/ui/gl/gl_surface_osmesa.cc b/ui/gl/gl_surface_osmesa.cc
index 2efe12be35b5fe3af5df4b3d96860c585bd1fc8d..b695224dbd2c9a27469e35c58b8810fd0bc6372b 100644
--- a/ui/gl/gl_surface_osmesa.cc
+++ b/ui/gl/gl_surface_osmesa.cc
@@ -94,9 +94,9 @@ bool GLSurfaceOSMesa::IsOffscreen() {
   return true;
 }
 
-bool GLSurfaceOSMesa::SwapBuffers() {
+gfx::SwapResult GLSurfaceOSMesa::SwapBuffers() {
   NOTREACHED() << "Should not call SwapBuffers on an GLSurfaceOSMesa.";
-  return false;
+  return gfx::SwapResult::SWAP_FAILED;
 }
 
 gfx::Size GLSurfaceOSMesa::GetSize() {
@@ -117,7 +117,9 @@ GLSurfaceOSMesa::~GLSurfaceOSMesa() {
 
 bool GLSurfaceOSMesaHeadless::IsOffscreen() { return false; }
 
-bool GLSurfaceOSMesaHeadless::SwapBuffers() { return true; }
+gfx::SwapResult GLSurfaceOSMesaHeadless::SwapBuffers() {
+  return gfx::SwapResult::SWAP_ACK;
+}
 
 GLSurfaceOSMesaHeadless::GLSurfaceOSMesaHeadless(
     const gfx::SurfaceConfiguration requested_configuration)