Move some accessibility methods, enums and interfaces into the content/public API.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index cfc4dc1513fea7d585208befd4dc9e59825f5531..d88dd5d12edfd43e9bde9052ad81cece8be90df9 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -17,6 +17,7 @@
 #include "content/common/pepper_renderer_instance_data.h"
 #include "content/common/view_message_enums.h"
 #include "content/port/common/input_event_ack_state.h"
+#include "content/public/common/accessibility_mode.h"
 #include "content/public/common/common_param_traits.h"
 #include "content/public/common/context_menu_params.h"
 #include "content/public/common/file_chooser_params.h"
@@ -64,7 +65,7 @@
 
 #define IPC_MESSAGE_START ViewMsgStart
 
-IPC_ENUM_TRAITS(AccessibilityMode)
+IPC_ENUM_TRAITS(content::AccessibilityMode)
 IPC_ENUM_TRAITS(ViewMsg_Navigate_Type::Value)
 IPC_ENUM_TRAITS(WebKit::WebContextMenuData::MediaType)
 IPC_ENUM_TRAITS(WebKit::WebMediaPlayerAction::Type)
@@ -665,7 +666,7 @@ IPC_STRUCT_BEGIN(ViewMsg_New_Params)
   IPC_STRUCT_MEMBER(WebKit::WebScreenInfo, screen_info)
 
   // The accessibility mode of the renderer.
-  IPC_STRUCT_MEMBER(AccessibilityMode, accessibility_mode)
+  IPC_STRUCT_MEMBER(content::AccessibilityMode, accessibility_mode)
 IPC_STRUCT_END()
 
 IPC_STRUCT_BEGIN(ViewMsg_PostMessage_Params)
@@ -1291,7 +1292,7 @@ IPC_MESSAGE_CONTROL1(ViewMsg_TempCrashWithData,
 
 // Change the accessibility mode in the renderer process.
 IPC_MESSAGE_ROUTED1(ViewMsg_SetAccessibilityMode,
-                    AccessibilityMode)
+                    content::AccessibilityMode)
 
 // An acknowledge to ViewHostMsg_MultipleTargetsTouched to notify the renderer
 // process to release the magnified image.