Android: Use virtualized context only for those with compatible config

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 7825942f7707dfe1a404c089a72e7222a2aaab4f..72f9c9611cacc2ffb6a6a037bdddf315138b85c5 100644
--- a/ui/gl/gl_surface_osmesa.cc
+++ b/ui/gl/gl_surface_osmesa.cc
@@ -20,10 +20,10 @@ GLSurfaceOSMesa::GLSurfaceOSMesa(OSMesaSurfaceFormat format,
     : size_(size) {
   switch (format) {
     case OSMesaSurfaceFormatBGRA:
-      format_ = OSMESA_BGRA;
+      format_ = static_cast<GLSurface::Format>(OSMESA_BGRA);
       break;
     case OSMesaSurfaceFormatRGBA:
-      format_ = OSMESA_RGBA;
+      format_ = static_cast<GLSurface::Format>(OSMESA_RGBA);
       break;
   }
   // Implementations of OSMesa surface do not support having a 0 size. In such
@@ -102,7 +102,7 @@ void* GLSurfaceOSMesa::GetHandle() {
   return buffer_.get();
 }
 
-unsigned GLSurfaceOSMesa::GetFormat() {
+GLSurface::Format GLSurfaceOSMesa::GetFormat() {
   return format_;
 }