Set an initial background for RenderFrameHosts during commit.

content/browser/frame_host/render_frame_host_manager_unittest.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_manager.h"
 
 #include <stdint.h>
 
 #include <tuple>
 #include <utility>
@@ skipping 916 matching lines @@
   EXPECT_FALSE(GetPendingFrameHost(manager));
 
   // Commit.
   manager->DidNavigateFrame(host, true);
   // Commit to SiteInstance should be delayed until RenderFrame commit.
   EXPECT_TRUE(host == manager->current_frame_host());
   ASSERT_TRUE(host);
   EXPECT_FALSE(host->GetSiteInstance()->HasSite());
   host->GetSiteInstance()->SetSite(kUrl1);
 
+  manager->GetRenderWidgetHostView()->SetBackgroundColor(SK_ColorRED);
+
   // 2) Navigate to next site. -------------------------
   const GURL kUrl2("http://www.google.com/foo");
   NavigationEntryImpl entry2(
       NULL /* instance */, kUrl2,
       Referrer(kUrl1, blink::WebReferrerPolicyDefault),
       base::string16() /* title */, ui::PAGE_TRANSITION_LINK,
       true /* is_renderer_init */);
   host = NavigateToEntry(manager, entry2);
 
   // The RenderFrameHost created in Init will be reused.
   EXPECT_TRUE(host == manager->current_frame_host());
   EXPECT_FALSE(GetPendingFrameHost(manager));
 
   // Commit.
   manager->DidNavigateFrame(host, true);
   EXPECT_TRUE(host == manager->current_frame_host());
   ASSERT_TRUE(host);
   EXPECT_TRUE(host->GetSiteInstance()->HasSite());
 
+  EXPECT_EQ(SK_ColorRED,
+            manager->GetRenderWidgetHostView()->background_color());
+
   // 3) Cross-site navigate to next site. --------------
   const GURL kUrl3("http://webkit.org/");
   NavigationEntryImpl entry3(
       NULL /* instance */, kUrl3,
       Referrer(kUrl2, blink::WebReferrerPolicyDefault),
       base::string16() /* title */, ui::PAGE_TRANSITION_LINK,
       false /* is_renderer_init */);
   host = NavigateToEntry(manager, entry3);
 
   // A new RenderFrameHost should be created.
   EXPECT_TRUE(GetPendingFrameHost(manager));
   ASSERT_EQ(host, GetPendingFrameHost(manager));
 
   change_observer.Reset();
 
   // Commit.
   manager->DidNavigateFrame(GetPendingFrameHost(manager), true);
   EXPECT_TRUE(host == manager->current_frame_host());
   ASSERT_TRUE(host);
   EXPECT_TRUE(host->GetSiteInstance()->HasSite());
   // Check the pending RenderFrameHost has been committed.
   EXPECT_FALSE(GetPendingFrameHost(manager));
 
   // We should observe RVH changed event.
   EXPECT_TRUE(change_observer.DidHostChange());
+
+  EXPECT_EQ(SK_ColorRED,
+            manager->GetRenderWidgetHostView()->background_color());
 }
 
 // Tests WebUI creation.
 TEST_F(RenderFrameHostManagerTest, WebUI) {
   set_should_create_webui(true);
   scoped_refptr<SiteInstance> instance =
       SiteInstance::Create(browser_context());
 
   std::unique_ptr<TestWebContents> web_contents(
       TestWebContents::Create(browser_context(), instance));
@@ skipping 2155 matching lines @@
   ASSERT_FALSE(delete_observer.deleted());
   EXPECT_FALSE(initial_rfh->is_active());
 
   // The initial RFH receives a DidStartProvisionalLoad IPC. It should not
   // create a NavigationHandle.
   initial_rfh->SimulateNavigationStart(kUrl3);
   EXPECT_FALSE(initial_rfh->navigation_handle());
 }
 
 }  // namespace content