Revert of Revert of Migrate accessibility from RenderView to RenderFrame.

content/common/frame_messages.h

 // Copyright 2013 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.
 
 // IPC messages for interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/frame_message_enums.h"
 #include "content/common/frame_param.h"
 #include "content/common/navigation_gesture.h"
 #include "content/common/resource_request_body.h"
 #include "content/public/common/color_suggestion.h"
 #include "content/public/common/common_param_traits.h"
 #include "content/public/common/context_menu_params.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/javascript_message_type.h"
 #include "content/public/common/page_state.h"
 #include "ipc/ipc_message_macros.h"
 #include "ui/gfx/ipc/gfx_param_traits.h"
 #include "url/gurl.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 
 #define IPC_MESSAGE_START FrameMsgStart
 
+IPC_ENUM_TRAITS_MIN_MAX_VALUE(AccessibilityMode,
+                              AccessibilityModeOff,
+                              AccessibilityModeComplete)
 IPC_ENUM_TRAITS_MIN_MAX_VALUE(content::JavaScriptMessageType,
                               content::JAVASCRIPT_MESSAGE_TYPE_ALERT,
                               content::JAVASCRIPT_MESSAGE_TYPE_PROMPT)
 IPC_ENUM_TRAITS_MAX_VALUE(FrameMsg_Navigate_Type::Value,
                           FrameMsg_Navigate_Type::NAVIGATE_TYPE_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(blink::WebContextMenuData::MediaType,
                           blink::WebContextMenuData::MediaTypeLast)
 IPC_ENUM_TRAITS_MAX_VALUE(ui::MenuSourceType, ui::MENU_SOURCE_TYPE_LAST)
 
 IPC_STRUCT_TRAITS_BEGIN(content::ColorSuggestion)
@@ skipping 346 matching lines @@
 
 // Request the text surrounding the selection with a |max_length|. The response
 // will be sent via FrameHostMsg_TextSurroundingSelectionResponse.
 IPC_MESSAGE_ROUTED1(FrameMsg_TextSurroundingSelectionRequest,
                     size_t /* max_length */)
 
 // Tells the renderer to insert a link to the specified stylesheet. This is
 // needed to support navigation transitions.
 IPC_MESSAGE_ROUTED1(FrameMsg_AddStyleSheetByURL, std::string)
 
+// Change the accessibility mode in the renderer process.
+IPC_MESSAGE_ROUTED1(FrameMsg_SetAccessibilityMode,
+                    AccessibilityMode)
+
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 // Blink and JavaScript error messages to log to the console
 // or debugger UI.
 IPC_MESSAGE_ROUTED4(FrameHostMsg_AddMessageToConsole,
                     int32, /* log level */
                     base::string16, /* msg */
                     int32, /* line number */
                     base::string16 /* source id */ )
@@ skipping 254 matching lines @@
                     size_t /* endOffset */)
 
 // Notifies the browser that the renderer has a pending navigation transition.
 IPC_MESSAGE_CONTROL2(FrameHostMsg_SetHasPendingTransitionRequest,
                      int /* render_frame_id */,
                      bool /* is_transition */)
 
 // Tells the browser to perform a navigation.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_BeginNavigation,
                     FrameHostMsg_BeginNavigation_Params)