Move the rest of the renderer->browser messages that belong in content. Also do a bunch of cleanup:

chrome/browser/accessibility/browser_accessibility_manager_mac.mm

 // 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.
 
 #include "chrome/browser/accessibility/browser_accessibility_manager_mac.h"
 
 #import "base/logging.h"
 #import "chrome/browser/accessibility/browser_accessibility_cocoa.h"
-#include "chrome/common/render_messages_params.h"
+#include "content/common/view_messages.h"
 
 // static
 BrowserAccessibilityManager* BrowserAccessibilityManager::Create(
     gfx::NativeView parent_view,
     const WebAccessibility& src,
     BrowserAccessibilityDelegate* delegate,
     BrowserAccessibilityFactory* factory) {
   return new BrowserAccessibilityManagerMac(
       parent_view, src, delegate, factory);
 }
 
 BrowserAccessibilityManagerMac::BrowserAccessibilityManagerMac(
     gfx::NativeView parent_window,
     const webkit_glue::WebAccessibility& src,
     BrowserAccessibilityDelegate* delegate,
     BrowserAccessibilityFactory* factory)
         : BrowserAccessibilityManager(parent_window, src, delegate, factory) {
 }
 
 void BrowserAccessibilityManagerMac::NotifyAccessibilityEvent(
     int type,
     BrowserAccessibility* node) {
   // Refer to AXObjectCache.mm (webkit).
   NSString* event_id = @"";
   switch (type) {
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_CHECK_STATE_CHANGED:
       // Does not exist on Mac.
       return;
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_CHILDREN_CHANGED:
       // TODO(dtseng): no clear equivalent on Mac.
       return;
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_FOCUS_CHANGED:
       event_id = NSAccessibilityFocusedUIElementChangedNotification;
       break;
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_LOAD_COMPLETE:
       event_id = @"AXLoadComplete";
       break;
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_VALUE_CHANGED:
       event_id = NSAccessibilityValueChangedNotification;
       break;
-    case ViewHostMsg_AccessibilityNotification_Params::
+    case ViewHostMsg_AccessibilityNotification_Type::
         NOTIFICATION_TYPE_SELECTED_TEXT_CHANGED:
       event_id = NSAccessibilitySelectedTextChangedNotification;
       break;
   }
   BrowserAccessibilityCocoa* native_node = node->toBrowserAccessibilityCocoa();
   DCHECK(native_node);
   NSAccessibilityPostNotification(native_node, event_id);
 }