Convert SetVisuallyDeemphasized IPC to mojo

chrome/common/extensions/chrome_extension_messages.h

 // Copyright 2014 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.
 
 // Chrome-specific IPC messages for extensions.
 // Extension-related messages that aren't specific to Chrome live in
 // extensions/common/extension_messages.h.
 //
 // Multiply-included message file, hence no include guard.
 
@@ skipping 18 matching lines @@
 
 #define IPC_MESSAGE_START ChromeExtensionMsgStart
 
 IPC_ENUM_TRAITS_MAX_VALUE(extensions::api::webstore::InstallStage,
                           extensions::api::webstore::INSTALL_STAGE_INSTALLING)
 IPC_ENUM_TRAITS_MAX_VALUE(extensions::webstore_install::Result,
                           extensions::webstore_install::RESULT_LAST)
 
 // Messages sent from the browser to the renderer.
 
-// Toggles visual muting of the render view area. This is on when a constrained
-// window is showing.
-IPC_MESSAGE_ROUTED1(ChromeViewMsg_SetVisuallyDeemphasized,
-                    bool /* deemphazied */)
-
 // Sent to the renderer if install stage updates were requested for an inline
 // install.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_InlineInstallStageChanged,
                     extensions::api::webstore::InstallStage /* stage */)
 
 // Sent to the renderer if download progress updates were requested for an
 // inline install.
 IPC_MESSAGE_ROUTED1(ExtensionMsg_InlineInstallDownloadProgress,
                     int /* percent_downloaded */)
 
@@ skipping 96 matching lines @@
 
 // Messages sent from the renderer to the browser.
 
 
 // Sent by the renderer to implement chrome.webstore.install().
 IPC_MESSAGE_ROUTED4(ExtensionHostMsg_InlineWebstoreInstall,
                     int32_t /* install id */,
                     int32_t /* return route id */,
                     std::string /* Web Store item ID */,
                     int /* listeners_mask */)