PDF Printing: embed browser user agent string in PDF metadata.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 3d815b12700a504dff8e384297d232fe6a98bf1a..f75ccd02f857011e81c592eed1d4907e268b6375 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -15,6 +15,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/channel_info.h"
+#include "chrome/common/chrome_content_client.h"

[Lei Zhang, 2015/11/05 21:37:23]

You can move both new #includes into the ENABLE_PRINTING section down near line
129.

[hal.canary, 2015/11/05 22:16:48]

done

 #include "chrome/common/chrome_isolated_world_ids.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
@@ -83,6 +84,7 @@
 #include "net/base/net_errors.h"
 #include "ppapi/c/private/ppb_pdf.h"
 #include "ppapi/shared_impl/ppapi_switches.h"
+#include "printing/print_settings.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
@@ -355,6 +357,9 @@ ChromeContentRendererClient::ChromeContentRendererClient() {
   for (size_t i = 0; i < arraysize(kPredefinedAllowedCompositorOrigins); ++i)
     allowed_compositor_origins_.insert(kPredefinedAllowedCompositorOrigins[i]);
 #endif
+#if defined(ENABLE_PRINTING)
+  printing::SetAgent(GetUserAgent());
+#endif
 }
 
 ChromeContentRendererClient::~ChromeContentRendererClient() {