PlzNavigate: Do not send synchronous navigations from the renderer to the browser.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2e7d77a987884907027c9592b092779f2be946ff..d64c7ead244f818f749959d47a20d9d43c5389ab 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4332,7 +4332,8 @@ WebNavigationPolicy RenderFrameImpl::DecidePolicyForNavigation(
   // PlzNavigate: send the request to the browser if needed.

[clamy, 2015/07/03 11:41:44]

Could you rephrase the comment to something like "If the navigation is not
synchronous, send it to the browser"?

[Fabrice (no longer in Chrome), 2015/07/03 14:55:36]

Done.

   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableBrowserSideNavigation) &&
-      info.urlRequest.checkForBrowserSideNavigation()) {
+      info.urlRequest.checkForBrowserSideNavigation() &&
+      CommonNavigationParams::ShouldMakeNetworkRequest(url)) {
     BeginNavigation(&info.urlRequest);
     return blink::WebNavigationPolicyIgnore;
   }