Modify ResourceMessageFilter so that it can support attaching to PluginProcessHost.

content/browser/web_contents/web_contents_impl.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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 61 matching lines @@
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_view.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/page_zoom.h"
 #include "content/public/common/url_constants.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_util.h"
 #include "net/base/network_change_notifier.h"
+#include "net/http/http_cache.h"
+#include "net/http/http_transaction_factory.h"
+#include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "ui/base/layout.h"
 #include "ui/base/touch/touch_device.h"
 #include "ui/base/touch/touch_enabled.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/gl/gl_switches.h"
 #include "webkit/common/webpreferences.h"
 
@@ skipping 166 matching lines @@
     params->url = entry.GetURL();
   }
 
   params->can_load_local_resources = entry.GetCanLoadLocalResources();
   params->frame_to_navigate = entry.GetFrameToNavigate();
 
   if (delegate)
     delegate->AddNavigationHeaders(params->url, &params->extra_headers);
 }
 
+void NotifyCacheOnIO(
+    scoped_refptr<net::URLRequestContextGetter> request_context,
+    const GURL& url,
+    const std::string& http_method) {
+  request_context->GetURLRequestContext()->http_transaction_factory()->
+      GetCache()->OnExternalCacheHit(url, http_method);
+}
+
 }  // namespace
 
 WebContents* WebContents::Create(const WebContents::CreateParams& params) {
   return WebContentsImpl::CreateWithOpener(
       params, static_cast<WebContentsImpl*>(params.opener));
 }
 
 WebContents* WebContents::CreateWithSessionStorage(
     const WebContents::CreateParams& params,
     const SessionStorageNamespaceMap& session_storage_namespace_map) {
@@ skipping 2004 matching lines @@
   controller_.ssl_manager()->DidLoadFromMemoryCache(details);
 
   FOR_EACH_OBSERVER(WebContentsObserver, observers_,
                     DidLoadResourceFromMemoryCache(details));
 
   // TODO(avi): Remove. http://crbug.com/170921
   NotificationService::current()->Notify(
       NOTIFICATION_LOAD_FROM_MEMORY_CACHE,
       Source<NavigationController>(&controller_),
       Details<LoadFromMemoryCacheDetails>(&details));
+
+  if (url.is_valid() && url.SchemeIsHTTPOrHTTPS()) {
+    scoped_refptr<net::URLRequestContextGetter> request_context(
+        resource_type == ResourceType::MEDIA ?
+            GetBrowserContext()->GetMediaRequestContextForRenderProcess(
+                GetRenderProcessHost()->GetID()) :
+            GetBrowserContext()->GetRequestContextForRenderProcess(
+                GetRenderProcessHost()->GetID()));
+    BrowserThread::PostTask(
+        BrowserThread::IO,
+        FROM_HERE,
+        base::Bind(&NotifyCacheOnIO, request_context, url, http_method));
+  }
 }
 
 void WebContentsImpl::OnDidDisplayInsecureContent() {
   RecordAction(UserMetricsAction("SSL.DisplayedInsecureContent"));
   displayed_insecure_content_ = true;
   SSLManager::NotifySSLInternalStateChanged(
       GetController().GetBrowserContext());
 }
 
 void WebContentsImpl::OnDidRunInsecureContent(
@@ skipping 1488 matching lines @@
 gfx::Size WebContentsImpl::GetSizeForNewRenderView() const {
   gfx::Size size;
   if (delegate_)
     size = delegate_->GetSizeForNewRenderView(this);
   if (size.IsEmpty())
     size = view_->GetContainerSize();
   return size;
 }
 
 }  // namespace content