Remove some WebContents::GetRenderViewHost() calls.

chrome/browser/extensions/api/declarative_content/declarative_content_condition_tracker_test.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/declarative_content/declarative_content_condition_tracker_test.h"
 
 #include "base/run_loop.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
@@ skipping 22 matching lines @@
                                                         nullptr));
   content::RenderFrameHostTester::For(tab->GetMainFrame())
       ->InitializeRenderFrameIfNeeded();
   return tab;
 }
 
 content::MockRenderProcessHost*
 DeclarativeContentConditionTrackerTest::GetMockRenderProcessHost(
     content::WebContents* contents) {
   return static_cast<content::MockRenderProcessHost*>(
-      contents->GetRenderViewHost()->GetProcess());
+      contents->GetMainFrame()->GetProcess());
 }
 
 const void* DeclarativeContentConditionTrackerTest::GeneratePredicateGroupID() {
   // The group ID is opaque to the trackers.
   return reinterpret_cast<const void*>(next_predicate_group_id_++);
 }
 
 }  // namespace extensions