Instant extended API: Make arrow up/down work.

chrome/common/render_messages.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.
 
 // Multiply-included file, no traditional include guard.
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
@@ skipping 285 matching lines @@
 
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxResize,
                     gfx::Rect /* search_box_bounds */)
 
 IPC_MESSAGE_ROUTED0(ChromeViewMsg_DetermineIfPageSupportsInstant)
 
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxAutocompleteResults,
                     std::vector<InstantAutocompleteResult>
                         /* native_suggestions */)
 
-IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxKeyPress,
-                    int /* keycode */)
+IPC_MESSAGE_ROUTED1(ChromeViewMsg_SearchBoxUpOrDownKeyPressed,
+                    int /* count */)

[sky, 2012/09/18 19:44:21]

Should this be a bool?

[sreeram, 2012/09/18 19:54:37]

No. For example, if the user presses PageDown, we get a count larger than 1
(similarly, count < -1 for PageUp).

 
 // Toggles visual muting of the render view area. This is on when a constrained
 // window is showing.
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_SetVisuallyDeemphasized,
                     bool /* deemphazied */)
 
 // Tells the renderer to translate the page contents from one language to
 // another.
 IPC_MESSAGE_ROUTED4(ChromeViewMsg_TranslatePage,
                     int /* page id */,
@@ skipping 349 matching lines @@
 // previous SetCookie message to be processed.
 IPC_SYNC_MESSAGE_ROUTED2_1(ChromeViewHostMsg_GetCookies,
                            GURL /* url */,
                            GURL /* first_party_for_cookies */,
                            std::string /* cookies */)
 
 // Provide the browser process with current renderer framerate.
 IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_FPS,
                      int /* routing id */,
                      float /* frames per second */)