Android WebView visited link highlighting implementation part 1

android_webview/browser/renderer_host/aw_render_view_host_ext.h

Index: android_webview/browser/renderer_host/aw_render_view_host_ext.h
diff --git a/android_webview/browser/renderer_host/aw_render_view_host_ext.h b/android_webview/browser/renderer_host/aw_render_view_host_ext.h
index 83bd439411ab2dbe2760ee7c3f76ea3f7a91d261..8c5479040060f1ba93baff38a7201a3fe3d38f4b 100644
--- a/android_webview/browser/renderer_host/aw_render_view_host_ext.h
+++ b/android_webview/browser/renderer_host/aw_render_view_host_ext.h
@@ -10,13 +10,21 @@
 #include "android_webview/common/aw_hit_test_data.h"
 #include "base/callback_forward.h"
 #include "base/threading/non_thread_safe.h"
+#include "components/visitedlink/browser/visitedlink_delegate.h"
+#include "components/visitedlink/browser/visitedlink_master.h"
+
+namespace content {
+struct FrameNavigateParams;
+struct LoadCommittedDetails;
+}  // namespace content
 
 namespace android_webview {
 
 // Provides RenderViewHost wrapper functionality for sending WebView-specific
 // IPC messages to the renderer and from there to WebKit.
 class AwRenderViewHostExt : public content::WebContentsObserver,
-                            public base::NonThreadSafe {
+                            public base::NonThreadSafe,
+                            public components::VisitedLinkDelegate {
  public:
   class Client {
    public:
@@ -53,8 +61,19 @@ class AwRenderViewHostExt : public content::WebContentsObserver,
  private:
   // content::WebContentsObserver implementation.
   virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
+  virtual void DidNavigateAnyFrame(
+      const content::LoadCommittedDetails& details,
+      const content::FrameNavigateParams& params) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
+  // components::VisitedLinkDelegate implementation.
+  virtual bool PersistToDisk() const OVERRIDE;
+  virtual bool AreEquivalentContexts(
+      content::BrowserContext* context1,
+      content::BrowserContext* context2) OVERRIDE;
+  virtual void RebuildTable(
+      const scoped_refptr<URLEnumerator>& enumerator) OVERRIDE;
+
   void OnDocumentHasImagesResponse(int msg_id, bool has_images);
   void OnUpdateHitTestData(const AwHitTestData& hit_test_data);
   void OnPictureUpdated();
@@ -68,6 +87,8 @@ class AwRenderViewHostExt : public content::WebContentsObserver,
 
   bool has_new_hit_test_data_;
 
+  components::VisitedLinkMaster visitedlink_master_;
+
   Client* client_;
 
   DISALLOW_COPY_AND_ASSIGN(AwRenderViewHostExt);