Use VisitedLinks component.

This allows to resolve visited links in the render process.
The newly introduced API at the Core layer should allow exposing
this functionality to our widgets and Qt quick API layers.

Change-Id: I256376afcfe79014dc274e2dddbac1986a884a93
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>

2 files changed, 39 insertions, 0 deletions

diff --git a/src/core/renderer/content_renderer_client_qt.cpp b/src/core/renderer/content_renderer_client_qt.cpp
index ecb469a9d..af1ba7dcb 100644
--- a/src/core/renderer/content_renderer_client_qt.cpp
+++ b/src/core/renderer/content_renderer_client_qt.cpp
@@ -43,6 +43,7 @@
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/localized_error.h"
+#include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "content/public/renderer/render_thread.h"
 #include "net/base/net_errors.h"
 #include "third_party/WebKit/public/platform/WebURLError.h"
@@ -56,6 +57,20 @@
 
 static const char kHttpErrorDomain[] = "http";
 
+ContentRendererClientQt::ContentRendererClientQt()
+{
+}
+
+ContentRendererClientQt::~ContentRendererClientQt()
+{
+}
+
+void ContentRendererClientQt::RenderThreadStarted()
+{
+    m_visitedLinkSlave.reset(new visitedlink::VisitedLinkSlave);
+    content::RenderThread::Get()->AddObserver(m_visitedLinkSlave.data());
+}
+
 void ContentRendererClientQt::RenderViewCreated(content::RenderView* render_view)
 {
     // RenderViewObserver destroys itself with its RenderView.
@@ -93,3 +108,13 @@ void ContentRendererClientQt::GetNavigationErrorStrings(blink::WebFrame *frame,
         *error_description = LocalizedError::GetErrorDetails(error, isPost);
     }
 }
+
+unsigned long long ContentRendererClientQt::VisitedLinkHash(const char *canonicalUrl, size_t length)
+{
+    return m_visitedLinkSlave->ComputeURLFingerprint(canonicalUrl, length);
+}
+
+bool ContentRendererClientQt::IsLinkVisited(unsigned long long linkHash)
+{
+    return m_visitedLinkSlave->IsVisited(linkHash);
+}
diff --git a/src/core/renderer/content_renderer_client_qt.h b/src/core/renderer/content_renderer_client_qt.h
index 360e82f2c..00705cdce 100644
--- a/src/core/renderer/content_renderer_client_qt.h
+++ b/src/core/renderer/content_renderer_client_qt.h
@@ -42,12 +42,26 @@
 #include "content/public/renderer/content_renderer_client.h"
 
 #include <QtGlobal>
+#include <QScopedPointer>
+
+namespace visitedlink {
+class VisitedLinkSlave;
+}
 
 class ContentRendererClientQt : public content::ContentRendererClient {
 public:
+    ContentRendererClientQt();
+    ~ContentRendererClientQt();
+    virtual void RenderThreadStarted() Q_DECL_OVERRIDE;
     virtual void RenderViewCreated(content::RenderView *render_view) Q_DECL_OVERRIDE;
 
     virtual bool ShouldSuppressErrorPage(const GURL &) Q_DECL_OVERRIDE { return false; }
     virtual void GetNavigationErrorStrings(blink::WebFrame* frame, const blink::WebURLRequest& failed_request, const blink::WebURLError& error
             , const std::string& accept_languages, std::string* error_html, base::string16* error_description) Q_DECL_OVERRIDE;
+
+    virtual unsigned long long VisitedLinkHash(const char *canonicalUrl, size_t length) Q_DECL_OVERRIDE;
+    virtual bool IsLinkVisited(unsigned long long linkHash) Q_DECL_OVERRIDE;
+
+private:
+    QScopedPointer<visitedlink::VisitedLinkSlave> m_visitedLinkSlave;
 };