Add printing tests to ensure window.print() works for subframes.

content/browser/frame_host/render_frame_host_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
@@ skipping 101 matching lines @@
   // RenderFrameHost
   int GetRoutingID() override;
   AXTreeIDRegistry::AXTreeID GetAXTreeID() override;
   SiteInstanceImpl* GetSiteInstance() override;
   RenderProcessHost* GetProcess() override;
   RenderWidgetHostView* GetView() override;
   RenderFrameHostImpl* GetParent() override;
   int GetFrameTreeNodeId() override;
   const std::string& GetFrameName() override;
   bool IsCrossProcessSubframe() override;
-  const GURL& GetLastCommittedURL() override;
+  const GURL& GetLastCommittedURL() const override;
   url::Origin GetLastCommittedOrigin() override;
   gfx::NativeView GetNativeView() override;
   void AddMessageToConsole(ConsoleMessageLevel level,
                            const std::string& message) override;
   void ExecuteJavaScript(const base::string16& javascript) override;
   void ExecuteJavaScript(const base::string16& javascript,
                          const JavaScriptResultCallback& callback) override;
   void ExecuteJavaScriptInIsolatedWorld(
       const base::string16& javascript,
       const JavaScriptResultCallback& callback,
@@ skipping 900 matching lines @@
   LoFiState last_navigation_lofi_state_;
 
   mojo::Binding<mojom::FrameHost> frame_host_binding_;
   mojom::FramePtr frame_;
 
   // If this is true then this object was created in response to a renderer
   // initiated request. Init() will be called, and until then navigation
   // requests should be queued.
   bool waiting_for_init_;
 
-  typedef std::pair<CommonNavigationParams, BeginNavigationParams>
-      PendingNavigation;
+  using PendingNavigation =
+      std::pair<CommonNavigationParams, BeginNavigationParams>;
   std::unique_ptr<PendingNavigation> pendinging_navigate_;
 
   // Callback for responding when
   // |FrameHostMsg_TextSurroundingSelectionResponse| message comes.
   TextSurroundingSelectionCallback text_surrounding_selection_callback_;
 
   std::vector<std::unique_ptr<service_manager::InterfaceRegistry>>
       media_registries_;
 
   std::unique_ptr<AssociatedInterfaceProviderImpl>
       remote_associated_interfaces_;
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_