Remove some WebContents::GetRenderViewHost() calls.

chrome/browser/download/download_resource_throttle_unittest.cc

 // Copyright (c) 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 "base/bind.h"
 #include "base/run_loop.h"
 #include "chrome/browser/download/download_request_limiter.h"
 #include "chrome/browser/download/download_resource_throttle.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/common/features.h"
@@ skipping 75 matching lines @@
     bool defer;
     throttle_->WillStartRequest(&defer);
     EXPECT_EQ(true, defer);
   }
 
   void StartThrottle() {
     content::BrowserThread::PostTask(
         content::BrowserThread::IO, FROM_HERE,
         base::Bind(&DownloadResourceThrottleTest::StartThrottleOnIOThread,
                    base::Unretained(this),
-                   web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
+                   web_contents()->GetMainFrame()->GetProcess()->GetID(),
                    web_contents()->GetRoutingID()));
     run_loop_->Run();
   }
 
  protected:
   content::ResourceThrottle* throttle_;
   MockWebContentsDelegate delegate_;
   scoped_refptr<DownloadRequestLimiter> limiter_;
   ::testing::NiceMock<MockResourceController> resource_controller_;
   std::unique_ptr<base::RunLoop> run_loop_;
@@ skipping 10 matching lines @@
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
 TEST_F(DownloadResourceThrottleTest, DownloadWithFailedFileAcecssRequest) {
   DownloadControllerBase::Get()
       ->SetApproveFileAccessRequestForTesting(false);
   EXPECT_CALL(resource_controller_, Cancel())
       .WillOnce(QuitLoop(run_loop_->QuitClosure()));
   StartThrottle();
 }
 #endif