Fix blits from multisampled renderbuffers to alpha:false WebGL back buffer.

gpu/command_buffer/service/gles2_cmd_decoder_autogen.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
index fa2f5799cae41c7d5f95b989c84053ae85acbb1c..25237e25b8c3f5626b91247b3f9bf409acc52d19 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h
@@ -4778,6 +4778,24 @@ error::Error GLES2DecoderImpl::HandleBindTexImage2DCHROMIUM(
   return error::kNoError;
 }
 
+error::Error GLES2DecoderImpl::HandleBindTexImage2DWithInternalformatCHROMIUM(
+    uint32_t immediate_data_size,
+    const volatile void* cmd_data) {
+  const volatile gles2::cmds::BindTexImage2DWithInternalformatCHROMIUM& c =
+      *static_cast<const volatile gles2::cmds::
+                       BindTexImage2DWithInternalformatCHROMIUM*>(cmd_data);
+  GLenum target = static_cast<GLenum>(c.target);
+  GLenum internalformat = static_cast<GLenum>(c.internalformat);
+  GLint imageId = static_cast<GLint>(c.imageId);
+  if (!validators_->texture_bind_target.IsValid(target)) {
+    LOCAL_SET_GL_ERROR_INVALID_ENUM(
+        "glBindTexImage2DWithInternalformatCHROMIUM", target, "target");
+    return error::kNoError;
+  }
+  DoBindTexImage2DWithInternalformatCHROMIUM(target, internalformat, imageId);
+  return error::kNoError;
+}
+
 error::Error GLES2DecoderImpl::HandleReleaseTexImage2DCHROMIUM(
     uint32_t immediate_data_size,
     const volatile void* cmd_data) {