Remove transform feedback validation in Blink

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 931b8feb6bb7add853a9b0c0e5c3cd0bc0d5894e..cc703d4ec3a206dbc4405f876a1376422d4d84f6 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -3769,6 +3769,11 @@ void GLES2DecoderImpl::DeleteTransformFeedbacksHelper(
     TransformFeedback* transform_feedback = GetTransformFeedback(
         client_ids[ii]);
     if (transform_feedback) {
+      if (transform_feedback->active()) {
+        LOCAL_SET_GL_ERROR(GL_INVALID_OPERATION, "glDeleteTransformFeedbacks",
+                           "Deleting transform feedback is active");
+        return;
+      }
       if (state_.bound_transform_feedback.get() == transform_feedback) {
         // Bind to the default transform feedback.
         DCHECK(state_.default_transform_feedback.get());
@@ -5762,6 +5767,20 @@ bool GLES2DecoderImpl::GetHelper(
           *params = static_cast<GLint>(read_buffer);
         }
         return true;
+      case GL_TRANSFORM_FEEDBACK_ACTIVE:
+        *num_written = 1;
+        if (params) {
+          *params =
+              static_cast<GLint>(state_.bound_transform_feedback->active());
+        }
+        return true;
+      case GL_TRANSFORM_FEEDBACK_PAUSED:
+        *num_written = 1;
+        if (params) {
+          *params =
+              static_cast<GLint>(state_.bound_transform_feedback->paused());
+        }
+        return true;
     }
   }
   switch (pname) {