android: add ThumbnailCache

chrome/browser/android/tab_android.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_TAB_ANDROID_H_
 #define CHROME_BROWSER_ANDROID_TAB_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/jni_weak_ref.h"
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
+#include "chrome/browser/android/tab_thumbnail_provider.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "chrome/browser/sync/glue/synced_tab_delegate_android.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper_delegate.h"
 #include "chrome/browser/ui/toolbar/toolbar_model.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class GURL;
 class Profile;
 class SkBitmap;
@@ skipping 11 matching lines @@
 namespace content {
 class ContentViewCore;
 class WebContents;
 }
 
 namespace prerender {
 class PrerenderManager;
 }
 
 class TabAndroid : public CoreTabHelperDelegate,
-                   public content::NotificationObserver {
+                   public content::NotificationObserver,
+                   public TabThumbnailProvider {
  public:
   enum TabLoadStatus {
 #define DEFINE_TAB_LOAD_STATUS(name, value)  name = value,
 #include "chrome/browser/android/tab_load_status.h"
 #undef DEFINE_TAB_LOAD_STATUS
   };
 
   // Convenience method to retrieve the Tab associated with the passed
   // WebContents.  Can return NULL.
   static TabAndroid* FromWebContents(content::WebContents* web_contents);
 
   // Returns the native TabAndroid stored in the Java Tab represented by
   // |obj|.
   static TabAndroid* GetNativeTab(JNIEnv* env, jobject obj);
 
   // Function to attach helpers to the contentView.
   static void AttachTabHelpers(content::WebContents* web_contents);
 
   TabAndroid(JNIEnv* env, jobject obj);
   virtual ~TabAndroid();
 
   base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
 
   // Return the WebContents, if any, currently owned by this TabAndroid.
   content::WebContents* web_contents() const { return web_contents_.get(); }
 
   // Return specific id information regarding this TabAndroid.
   const SessionID& session_id() const { return session_tab_id_; }
-  int GetAndroidId() const;
+
   int GetSyncId() const;
 
   // Return the tab title.
   base::string16 GetTitle() const;
 
-  // Return the tab url.
-  GURL GetURL() const;
-
   // Load the tab if it was unloaded from memory.
   bool LoadIfNeeded();
 
   // Helper methods to make it easier to access objects from the associated
   // WebContents.  Can return NULL.
-  content::ContentViewCore* GetContentViewCore() const;
   Profile* GetProfile() const;
   browser_sync::SyncedTabDelegate* GetSyncedTabDelegate() const;
 
   void SetWindowSessionID(SessionID::id_type window_id);
   void SetSyncId(int sync_id);
 
   virtual void HandlePopupNavigation(chrome::NavigateParams* params);
 
   virtual void OnReceivedHttpAuthRequest(jobject auth_handler,
                                          const base::string16& host,
                                          const base::string16& realm);
 
   // Called to determine if chrome://welcome should contain links to the terms
   // of service and the privacy notice.
   virtual bool ShouldWelcomePageLinkToTermsOfService();
 
   bool HasPrerenderedUrl(GURL gurl);
 
+  // TabThumbnailProvider -----------------------------------------------------
+  // The unique Id associated with the Android-side of this tab.
+  virtual int GetAndroidId() const OVERRIDE;
+  // Return the tab url.
+  virtual GURL GetURL() const OVERRIDE;
+  virtual content::ContentViewCore* GetContentViewCore() const OVERRIDE;
+
   // CoreTabHelperDelegate ----------------------------------------------------
 
   virtual void SwapTabContents(content::WebContents* old_contents,
                                content::WebContents* new_contents,
                                bool did_start_load,
                                bool did_finish_load) OVERRIDE;
 
   // NotificationObserver -----------------------------------------------------
   virtual void Observe(int type,
                        const content::NotificationSource& source,
@@ skipping 49 matching lines @@
   scoped_ptr<content::WebContents> web_contents_;
   scoped_ptr<chrome::android::ChromeWebContentsDelegateAndroid>
       web_contents_delegate_;
 
   scoped_ptr<browser_sync::SyncedTabDelegateAndroid> synced_tab_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(TabAndroid);
 };
 
 #endif  // CHROME_BROWSER_ANDROID_TAB_ANDROID_H_