New link rel=prerender api, using WebKit::WebPrerenderingPlatform

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

 // Copyright (c) 2012 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/chrome_resource_dispatcher_host_delegate.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 19 matching lines @@
 #include "chrome/browser/ui/login/login_prompt.h"
 #include "chrome/browser/ui/sync/one_click_signin_helper.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/user_script.h"
 #include "chrome/common/metrics/experiments_helper.h"
 #include "chrome/common/metrics/proto/chrome_experiments.pb.h"
 #include "chrome/common/render_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
+#include "content/public/browser/render_view_host_delegate.h"
+#include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/resource_dispatcher_host.h"
 #include "content/public/browser/resource_request_info.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
 #include "net/base/load_flags.h"
 #include "net/base/ssl_config_service.h"
 #include "net/url_request/url_request.h"
+#include "ui/gfx/size.h"
 #include "third_party/protobuf/src/google/protobuf/repeated_field.h"
 
 // TODO(oshima): Enable this for other platforms.
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/renderer_host/offline_resource_throttle.h"
 #endif
 
 using content::BrowserThread;
 using content::RenderViewHost;
 using content::ResourceDispatcherHostLoginDelegate;
 using content::ResourceRequestInfo;
 
 namespace {
 
+// TODO(gavinp): Remove this after https://bugs.webkit.org/show_bug.cgi?id=85005
+// lands in WebKit.
 void AddPrerenderOnUI(
     int render_process_id, int render_view_id,
     const GURL& url, const content::Referrer& referrer) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   prerender::PrerenderManager* prerender_manager =
       prerender::FindPrerenderManagerUsingRenderProcessId(render_process_id);
   if (!prerender_manager)
     return;
 
-  prerender_manager->AddPrerenderFromLinkRelPrerender(render_process_id,
-                                                      render_view_id,
-                                                      url,
-                                                      referrer);
+  RenderViewHost* render_view_host =
+      RenderViewHost::FromID(render_process_id, render_view_id);
+  if (!render_view_host)
+    return;
+  gfx::Rect tab_bounds;
+  if (content::WebContents* source_wc =
+          render_view_host->GetDelegate()->GetAsWebContents())
+    source_wc->GetView()->GetContainerBounds(&tab_bounds);
+  gfx::Size view_size = tab_bounds.size();
+  if (view_size.IsEmpty())
+    view_size = prerender_manager->config().default_tab_bounds.size();
+  prerender_manager->AddPrerenderFromLinkRelPrerender(
+      render_process_id, render_view_id, url, referrer, view_size);
 }
 
 void NotifyDownloadInitiatedOnUI(int render_process_id, int render_view_id) {
   RenderViewHost* rvh = RenderViewHost::FromID(render_process_id,
                                                render_view_id);
   if (!rvh)
     return;
 
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_DOWNLOAD_INITIATED,
@@ skipping 356 matching lines @@
   if (base::Base64Encode(serialized, &hashed)) {
     // If successful, swap the header value with the new one.
     // Note that the list of IDs and the header could be temporarily out of sync
     // if IDs are added as we are recreating the header, but we're OK with those
     // descrepancies.
     variation_ids_header_ = hashed;
   } else {
     DVLOG(1) << "Failed to base64 encode Variation IDs value: " << serialized;
   }
 }