Removed sending of the following IPC messages from chrome and added API's on the RenderViewHost

content/common/view_message_enums.h

+// Copyright (c) 2011 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.
+
+#ifndef CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
+#define CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_
+
+struct ViewHostMsg_AccEvent {
+  enum Value {
+    // The active descendant of a node has changed.
+    ACTIVE_DESCENDANT_CHANGED,
+
+    // An alert appeared.
+    ALERT,
+
+    // The node checked state has changed.
+    CHECK_STATE_CHANGED,
+
+    // The node tree structure has changed.
+    CHILDREN_CHANGED,
+
+    // The node in focus has changed.
+    FOCUS_CHANGED,
+
+    // Page layout has completed.
+    LAYOUT_COMPLETE,
+
+    // Content within a part of the page marked as a live region changed.
+    LIVE_REGION_CHANGED,
+
+    // The document node has loaded.
+    LOAD_COMPLETE,
+
+    // A menu list value changed.
+    MENU_LIST_VALUE_CHANGED,
+
+    // An object was shown.
+    OBJECT_SHOW,
+
+    // An object was hidden.
+    OBJECT_HIDE,
+
+    // The number of rows in a grid or tree control changed.
+    ROW_COUNT_CHANGED,
+
+    // A row in a grid or tree control was collapsed.
+    ROW_COLLAPSED,
+
+    // A row in a grid or tree control was expanded.
+    ROW_EXPANDED,
+
+    // The document was scrolled to an anchor node.
+    SCROLLED_TO_ANCHOR,
+
+    // One or more selected children of this node have changed.
+    SELECTED_CHILDREN_CHANGED,
+
+    // The text cursor or selection changed.
+    SELECTED_TEXT_CHANGED,
+
+    // Text was inserted in a node with text content.
+    TEXT_INSERTED,
+
+    // Text was removed in a node with text content.
+    TEXT_REMOVED,
+
+    // The node value has changed.
+    VALUE_CHANGED,
+  };
+};
+
+// Values that may be OR'd together to form the 'flags' parameter of the
+// ViewMsg_EnablePreferredSizeChangedMode message.
+enum ViewHostMsg_EnablePreferredSizeChangedMode_Flags {
+  kPreferredSizeNothing,
+  kPreferredSizeWidth = 1 << 0,
+  // Requesting the height currently requires a polling loop in render_view.cc.
+  kPreferredSizeHeightThisIsSlow = 1 << 1,
+};
+
+struct ViewHostMsg_RunFileChooser_Mode {
+ public:
+  enum Value {
+    // Requires that the file exists before allowing the user to pick it.
+    Open,
+
+    // Like Open, but allows picking multiple files to open.
+    OpenMultiple,
+
+    // Like Open, but selects a folder.
+    OpenFolder,
+
+    // Allows picking a nonexistent file, and prompts to overwrite if the file
+    // already exists.
+    Save,
+  };
+};
+
+// Values that may be OR'd together to form the 'flags' parameter of a
+// ViewHostMsg_UpdateRect_Params structure.
+struct ViewHostMsg_UpdateRect_Flags {
+  enum {
+    IS_RESIZE_ACK = 1 << 0,
+    IS_RESTORE_ACK = 1 << 1,
+    IS_REPAINT_ACK = 1 << 2,
+  };
+  static bool is_resize_ack(int flags) {
+    return (flags & IS_RESIZE_ACK) != 0;
+  }
+  static bool is_restore_ack(int flags) {
+    return (flags & IS_RESTORE_ACK) != 0;
+  }
+  static bool is_repaint_ack(int flags) {
+    return (flags & IS_REPAINT_ACK) != 0;
+  }
+};
+
+struct ViewMsg_Navigate_Type {
+ public:
+  enum Value {
+    // Reload the page.
+    RELOAD,
+
+    // Reload the page, ignoring any cache entries.
+    RELOAD_IGNORING_CACHE,
+
+    // The navigation is the result of session restore and should honor the
+    // page's cache policy while restoring form state. This is set to true if
+    // restoring a tab/session from the previous session and the previous
+    // session did not crash. If this is not set and the page was restored then
+    // the page's cache policy is ignored and we load from the cache.
+    RESTORE,
+
+    // Navigation type not categorized by the other types.
+    NORMAL
+  };
+};
+
+// The user has completed a find-in-page; this type defines what actions the
+// renderer should take next.
+struct ViewMsg_StopFinding_Params {
+  enum Action {
+    kClearSelection,
+    kKeepSelection,
+    kActivateSelection
+  };
+
+  ViewMsg_StopFinding_Params() : action(kClearSelection) {}
+
+  // The action that should be taken when the find is completed.
+  Action action;
+};
+
+#endif  // CONTENT_COMMON_VIEW_MESSAGES_ENUMS_H_