Stop using GetUserAgent from non-browser process

https://chromium-review.googlesource.com/c/chromium/src/+/1353052

atom/browser/common_web_contents_delegate.cc

@@ -10,6 +10,7 @@
 #include <utility>
 #include <vector>
 
+#include "atom/browser/atom_browser_client.h"
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/native_window.h"
 #include "atom/browser/ui/file_dialog.h"

atom/renderer/renderer_client_base.cc

@@ -58,6 +58,7 @@
 #if BUILDFLAG(ENABLE_PRINTING)
 #include "atom/renderer/printing/print_render_frame_helper_delegate.h"
 #include "components/printing/renderer/print_render_frame_helper.h"
+#include "printing/print_settings.h"
 #endif  // BUILDFLAG(ENABLE_PRINTING)
 
 namespace atom {
@@ -288,6 +289,12 @@ bool RendererClientBase::IsKeySystemsUpdateNeeded() {
 #endif
 }
 
+void RendererClientBase::DidSetUserAgent(const std::string& user_agent) {
+#if BUILDFLAG(ENABLE_PRINTING)
+  printing::SetAgent(user_agent);
+#endif
+}
+
 v8::Local<v8::Context> RendererClientBase::GetContext(
     blink::WebLocalFrame* frame,
     v8::Isolate* isolate) const {

atom/renderer/renderer_client_base.h

@@ -61,6 +61,7 @@ class RendererClientBase : public content::ContentRendererClient {
       std::vector<std::unique_ptr<::media::KeySystemProperties>>* key_systems)
       override;
   bool IsKeySystemsUpdateNeeded() override;
+  void DidSetUserAgent(const std::string& user_agent) override;
 
  private:
   std::unique_ptr<PreferencesManager> preferences_manager_;