Implement IsSearchProviderInstalled and a test for it.

chrome/common/render_messages_internal.h

 // Copyright (c) 2010 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 1530 matching lines @@
   // true) focusable element.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_TakeFocus, bool /* reverse */)
 
   // Notification that the page has an OpenSearch description document
   // associated with it.
   IPC_MESSAGE_ROUTED3(ViewHostMsg_PageHasOSDD,
                       int32 /* page_id */,
                       GURL /* url of OS description document */,
                       bool /* autodetected */)
 
-  // requires for updating text input state.
+  // Find out if the given url's security origin is installed as a search provider.
+  IPC_SYNC_MESSAGE_ROUTED1_1(
+      ViewHostMsg_GetSearchProviderInstallState,
+      GURL,
+      ViewHostMsg_GetSearchProviderInstallState_Params /* install */)
+
+  // Required for updating text input state.
   IPC_MESSAGE_ROUTED2(ViewHostMsg_ImeUpdateTextInputState,
                       WebKit::WebTextInputType, /* text_input_type */
                       gfx::Rect /* caret_rect */)
 
-  // requires for cancelling an ongoing input method composition.
+  // Required for cancelling an ongoing input method composition.
   IPC_MESSAGE_ROUTED0(ViewHostMsg_ImeCancelComposition)
 
   // Tells the browser that the renderer is done calculating the number of
   // rendered pages according to the specified settings.
   IPC_MESSAGE_ROUTED2(ViewHostMsg_DidGetPrintedPagesCount,
                       int /* rendered document cookie */,
                       int /* number of rendered pages */)
 
   // Sends back to the browser the rendered "printed page" that was requested by
   // a ViewMsg_PrintPage message or from scripted printing. The memory handle in
   // this message is already valid in the browser process.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_DidPrintPage,
                       ViewHostMsg_DidPrintPage_Params /* page content */)
 
   // The renderer wants to know the default print settings.
   IPC_SYNC_MESSAGE_ROUTED0_1(ViewHostMsg_GetDefaultPrintSettings,
                              ViewMsg_Print_Params /* default_settings */)
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   // It's the renderer that controls the printing process when it is generated
   // by javascript. This step is about showing UI to the user to select the
   // final print settings. The output parameter is the same as
   // ViewMsg_PrintPages which is executed implicitly.
   IPC_SYNC_MESSAGE_ROUTED1_1(ViewHostMsg_ScriptedPrint,
                              ViewHostMsg_ScriptedPrint_Params,
                              ViewMsg_PrintPages_Params
-                                 /* settings choosen by the user*/)
+                                 /* settings chosen by the user*/)
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
   // WebKit and JavaScript error messages to log to the console
   // or debugger UI.
   IPC_MESSAGE_ROUTED3(ViewHostMsg_AddMessageToConsole,
                       std::wstring, /* msg */
                       int32, /* line number */
                       std::wstring /* source id */)
 
   // Stores new inspector setting in the profile.
@@ skipping 912 matching lines @@
   IPC_MESSAGE_CONTROL2(ViewHostMsg_Geolocation_Resume,
                        int /* render_view_id */,
                        int /* bridge_id */)
 
   // Send the tree of accessibility data to the browser, where it's cached
   // in order to respond to OS accessibility queries immediately.
   IPC_MESSAGE_ROUTED1(ViewHostMsg_AccessibilityTree,
                       webkit_glue::WebAccessibility)
 
 IPC_END_MESSAGES(ViewHost)