gpu: Add CHROMIUM_texture_from_image spec and fence support.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc
index 7f595d05d1d52bc6fe9e461a40f917005fd4aec7..eb451a2b66381de28f25f77cbf8908884efa7356 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc
@@ -2652,10 +2652,14 @@ error::Error GLES2DecoderPassthroughImpl::DoBindUniformLocationCHROMIUM(
 
 error::Error GLES2DecoderPassthroughImpl::DoBindTexImage2DCHROMIUM(
     GLenum target,
-    GLint imageId) {
+    GLint imageId,
+    GLint fenceId) {
   // TODO(geofflang): error handling
   gl::GLImage* image = image_manager_->LookupImage(imageId);
-  if (!image->BindTexImage(target)) {
+  gl::GLFence* fence = nullptr;
+  if (fenceId)
+    fence = fence_manager_->LookupFence(fenceId);
+  if (!image->BindTexImage(target, fence)) {
     image->CopyTexImage(target);
   }
   return error::kNoError;