Remove usages of WebContents::GetRenderViewHost().

This CL was uploaded by git cl split.

R=nasko@chromium.org

Bug: 1142671
Change-Id: Iceb1065802ea3c66095b289cca615a6f21201e98
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2500486
Auto-Submit: Lucas Gadani <lfg@chromium.org>
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Commit-Queue: Nasko Oskov <nasko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823787}

chrome/browser/extensions/api/web_navigation/web_navigation_apitest.cc

@@ -376,9 +376,11 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, RequestOpenTab) {
   mouse_event.button = blink::WebMouseEvent::Button::kMiddle;
   mouse_event.SetPositionInWidget(7, 7);
   mouse_event.click_count = 1;
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
   mouse_event.SetType(blink::WebInputEvent::Type::kMouseUp);
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
@@ -409,9 +411,11 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, TargetBlank) {
   mouse_event.button = blink::WebMouseEvent::Button::kLeft;
   mouse_event.SetPositionInWidget(7, 7);
   mouse_event.click_count = 1;
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
   mouse_event.SetType(blink::WebInputEvent::Type::kMouseUp);
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }
@@ -440,9 +444,11 @@ IN_PROC_BROWSER_TEST_F(WebNavigationApiTest, TargetBlankIncognito) {
   mouse_event.button = blink::WebMouseEvent::Button::kLeft;
   mouse_event.SetPositionInWidget(7, 7);
   mouse_event.click_count = 1;
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
   mouse_event.SetType(blink::WebInputEvent::Type::kMouseUp);
-  tab->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(mouse_event);
+  tab->GetMainFrame()->GetRenderViewHost()->GetWidget()->ForwardMouseEvent(
+      mouse_event);
 
   ASSERT_TRUE(catcher.GetNextResult()) << catcher.message();
 }