Inform disk cache of WebKit memory cache hits.

chrome/browser/renderer_host/chrome_render_message_filter.cc

Index: chrome/browser/renderer_host/chrome_render_message_filter.cc
diff --git a/chrome/browser/renderer_host/chrome_render_message_filter.cc b/chrome/browser/renderer_host/chrome_render_message_filter.cc
index b7f1cfe1bc646992679b1549b3252042188cb47f..ef2e4a55be9392ff864b938a2a5378e06d542ceb 100644
--- a/chrome/browser/renderer_host/chrome_render_message_filter.cc
+++ b/chrome/browser/renderer_host/chrome_render_message_filter.cc
@@ -31,6 +31,8 @@
 #include "content/common/url_constants.h"
 #include "content/common/view_messages.h"
 #include "googleurl/src/gurl.h"
+#include "net/http/http_cache.h"
+#include "net/http/http_transaction_factory.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebSecurityOrigin.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebString.h"
 
@@ -134,6 +136,8 @@ bool ChromeRenderMessageFilter::OnMessageReceived(const IPC::Message& message,
     IPC_MESSAGE_HANDLER(ViewHostMsg_CanTriggerClipboardWrite,
                         OnCanTriggerClipboardWrite)
     IPC_MESSAGE_HANDLER(ViewHostMsg_ClearPredictorCache, OnClearPredictorCache)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_DidAccessResourceInMemoryCache,
+                        OnDidAccessResourceInMemoryCache)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -531,3 +535,10 @@ void ChromeRenderMessageFilter::OnSetCookie(const IPC::Message& message,
   AutomationResourceMessageFilter::SetCookiesForUrl(
       render_process_id_, message.routing_id(), url, cookie);
 }
+
+void ChromeRenderMessageFilter::OnDidAccessResourceInMemoryCache(
+    const GURL& url,
+    const std::string& http_method) {
+  request_context_->GetURLRequestContext()->http_transaction_factory()->

[rvargas (doing something else), 2011/07/27 23:26:17]

I'm not sure, but doesn't this belong to content?

[James Simonsen, 2011/07/28 01:25:19]

Sorry, I don't know what you mean by "content." I mostly work in WebKit, so I'm
not as familiar with the Chrome side.

In case this is along the lines what you're asking... I've verified that both
incognito and the normal windows successfully update the rank of the entries
while browsing around google.com's press information.

+      GetCache()->ReportExternalCacheHit(url, http_method);
+}