Remove WebContents::IsActiveEntry from Instant Extended and from WebContents.

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
diff --git a/chrome/common/render_messages.h b/chrome/common/render_messages.h
index 4d5c9926f47f50911f497009f72adc778406f0fc..8e128b97d308d3b409e83a1c066ed61cbd27394f 100644
--- a/chrome/common/render_messages.h
+++ b/chrome/common/render_messages.h
@@ -239,6 +239,9 @@ IPC_MESSAGE_CONTROL2(ChromeViewMsg_SetFieldTrialGroup,
 // Asks the renderer to send back V8 heap stats.
 IPC_MESSAGE_CONTROL0(ChromeViewMsg_GetV8HeapStats)
 
+IPC_MESSAGE_ROUTED1(ChromeViewMsg_SetPageSequenceNumber,
+                    int /* page_seq_no */)
+
 IPC_MESSAGE_ROUTED0(ChromeViewMsg_DetermineIfPageSupportsInstant)
 
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxSetDisplayInstantResults,
@@ -631,71 +634,71 @@ IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_FPS,
 
 // Logs events from InstantExtended New Tab Pages.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_LogEvent,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     NTPLoggingEventType /* event */)
 
 // Logs an impression on one of the Most Visited tile on the InstantExtended
 // New Tab Page.
 IPC_MESSAGE_ROUTED3(ChromeViewHostMsg_LogMostVisitedImpression,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     int /* position */,
                     base::string16 /* provider */)
 
 // Logs a navigation on one of the Most Visited tile on the InstantExtended
 // New Tab Page.
 IPC_MESSAGE_ROUTED3(ChromeViewHostMsg_LogMostVisitedNavigation,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     int /* position */,
                     base::string16 /* provider */)
 
 // The Instant page asks for Chrome identity check against |identity|.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_ChromeIdentityCheck,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     base::string16 /* identity */)
 
 // Tells InstantExtended to set the omnibox focus state.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_FocusOmnibox,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     OmniboxFocusState /* state */)
 
 // Tells InstantExtended to paste text into the omnibox.  If text is empty,
 // the clipboard contents will be pasted. This causes the omnibox dropdown to
 // open.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_PasteAndOpenDropdown,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     base::string16 /* text to be pasted */)
 
 // Tells InstantExtended whether the embedded search API is supported.
 // See http://dev.chromium.org/embeddedsearch
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_InstantSupportDetermined,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     bool /* result */)
 
 // Tells InstantExtended to delete a most visited item.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_SearchBoxDeleteMostVisitedItem,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     GURL /* url */)
 
 // Tells InstantExtended to navigate the active tab to a possibly privileged
 // URL.
 IPC_MESSAGE_ROUTED4(ChromeViewHostMsg_SearchBoxNavigate,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     GURL /* destination */,
                     WindowOpenDisposition /* disposition */,
                     bool /*is_most_visited_item_url*/)
 
 // Tells InstantExtended to undo all most visited item deletions.
 IPC_MESSAGE_ROUTED1(ChromeViewHostMsg_SearchBoxUndoAllMostVisitedDeletions,
-                    int /* page_id */)
+                    int /* page_seq_no */)
 
 // Tells InstantExtended to undo one most visited item deletion.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_SearchBoxUndoMostVisitedDeletion,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     GURL /* url */)
 
 // Tells InstantExtended whether the page supports voice search.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_SetVoiceSearchSupported,
-                    int /* page_id */,
+                    int /* page_seq_no */,
                     bool /* supported */)
 
 // Tells the renderer a list of URLs which should be bounced back to the browser