Ensure that the Windows system font information and the scrollbar metrics are...

Ensure that the Windows system font information and the scrollbar metrics are synced with the ViewMsg_SetRendererPrefs IPC

The patch to sync the font and scrollbar metrics from the browser to the renderer was sending these values only during
RenderView creation and not along with the ViewMsg_SetRendererPrefs IPC which caused scrollbars to disappear and other bad
things.

BUG=474871

Review URL: https://codereview.chromium.org/1069683006

Cr-Commit-Position: refs/heads/master@{#324349}

content/browser/renderer_host/render_view_host_impl.cc

@@ -357,9 +357,12 @@ bool RenderViewHostImpl::IsRenderViewLive() const {
 }
 
 void RenderViewHostImpl::SyncRendererPrefs() {
-  Send(new ViewMsg_SetRendererPrefs(GetRoutingID(),
-                                    delegate_->GetRendererPrefs(
-                                        GetProcess()->GetBrowserContext())));
+  RendererPreferences renderer_preferences =
+      delegate_->GetRendererPrefs(GetProcess()->GetBrowserContext());
+#if defined(OS_WIN)
+  GetWindowsSpecificPrefs(&renderer_preferences);
+#endif
+  Send(new ViewMsg_SetRendererPrefs(GetRoutingID(), renderer_preferences));
 }
 
 WebPreferences RenderViewHostImpl::ComputeWebkitPrefs() {