Remove usages of WebContents::GetRenderViewHost().

This CL was uploaded by git cl split.

R=rbpotter@chromium.org

Bug: 1142671
Change-Id: I82287d4fa4972fadf79f5336e89d2528521f3c4c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500557
Auto-Submit: Lucas Gadani <lfg@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821607}

chrome/browser/printing/print_view_manager_base.cc

@@ -710,9 +710,11 @@ bool PrintViewManagerBase::RenderAllMissingPagesNow() {
   }
 
   // We can't print if there is no renderer.
-  if (!web_contents() ||
-      !web_contents()->GetRenderViewHost() ||
-      !web_contents()->GetRenderViewHost()->IsRenderViewLive()) {
+  if (!web_contents() || !web_contents()->GetMainFrame()->GetRenderViewHost() ||
+      !web_contents()
+           ->GetMainFrame()
+           ->GetRenderViewHost()
+           ->IsRenderViewLive()) {
     return false;
   }
 
@@ -756,8 +758,11 @@ bool PrintViewManagerBase::CreateNewPrintJob(
   DisconnectFromCurrentPrintJob();
 
   // We can't print if there is no renderer.
-  if (!web_contents()->GetRenderViewHost() ||
-      !web_contents()->GetRenderViewHost()->IsRenderViewLive()) {
+  if (!web_contents()->GetMainFrame()->GetRenderViewHost() ||
+      !web_contents()
+           ->GetMainFrame()
+           ->GetRenderViewHost()
+           ->IsRenderViewLive()) {
     return false;
   }