Adds kind-of-live thumbnail generation for a potential tab switcher.

chrome/browser/renderer_host/test_render_view_host.cc

 // Copyright (c) 2009 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/renderer_host/test_render_view_host.h"
 
 #include "chrome/browser/renderer_host/backing_store.h"
 #include "chrome/browser/tab_contents/test_web_contents.h"
 #include "chrome/common/render_messages.h"
 
 using webkit_glue::PasswordForm;
 
 TestRenderViewHost::TestRenderViewHost(SiteInstance* instance,
                                        RenderViewHostDelegate* delegate,
                                        int routing_id,
                                        base::WaitableEvent* modal_dialog_event)
     : RenderViewHost(instance, delegate, routing_id, modal_dialog_event),
       render_view_created_(false),
       delete_counter_(NULL) {
-  set_view(new TestRenderWidgetHostView());
+  set_view(new TestRenderWidgetHostView(this));
 }
 
 TestRenderViewHost::~TestRenderViewHost() {
   if (delete_counter_)
     ++*delete_counter_;
 
   // Since this isn't a traditional view, we have to delete it.
   delete view();
 }
 
@@ skipping 28 matching lines @@
   params.gesture = NavigationGestureUser;
   params.contents_mime_type = std::string();
   params.is_post = false;
   params.is_content_filtered = false;
   params.http_status_code = 0;
 
   ViewHostMsg_FrameNavigate msg(1, params);
   OnMsgNavigate(msg);
 }
 
+TestRenderWidgetHostView::TestRenderWidgetHostView(RenderWidgetHost* rwh)
+    : rwh_(rwh),
+      is_showing_(false) {
+}
+
 BackingStore* TestRenderWidgetHostView::AllocBackingStore(
     const gfx::Size& size) {
-  return new BackingStore(size);
+  return new BackingStore(rwh_, size);
 }
 
 void RenderViewHostTestHarness::NavigateAndCommit(const GURL& url) {
   controller().LoadURL(url, GURL(), 0);
   rvh()->SendNavigate(process()->max_page_id() + 1, url);
 }
 
 void RenderViewHostTestHarness::SetUp() {
   // See comment above profile_ decl for why we check for NULL here.
   if (!profile_.get())
     profile_.reset(new TestingProfile());
 
   // This will be deleted when the TabContents goes away.
   SiteInstance* instance = SiteInstance::CreateSiteInstance(profile_.get());
 
   contents_.reset(new TestTabContents(profile_.get(), instance));
 }
 
 void RenderViewHostTestHarness::TearDown() {
   contents_.reset();
 
   // Make sure that we flush any messages related to TabContents destruction
   // before we destroy the profile.
   MessageLoop::current()->RunAllPending();
 }