Move RenderViewHost::InsertCSS to RenderFrameHost.

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"
@@ skipping 279 matching lines @@
 
 // Tells the renderer to perform the specified navigation, interrupting any
 // existing navigation.
 IPC_MESSAGE_ROUTED1(FrameMsg_Navigate, FrameMsg_Navigate_Params)
 
 // Instructs the frame to swap out for a cross-site transition, including
 // running the unload event handler. Expects a SwapOut_ACK message when
 // finished.
 IPC_MESSAGE_ROUTED0(FrameMsg_SwapOut)
 
+// Request for the renderer to insert CSS into the frame.
+IPC_MESSAGE_ROUTED1(FrameMsg_CSSInsertRequest,
+                    std::string  /* css */)
+
 // -----------------------------------------------------------------------------
 // Messages sent from the renderer to the browser.
 
 // Sent by the renderer when a child frame is created in the renderer.
 //
 // Each of these messages will have a corresponding FrameHostMsg_Detach message
 // sent when the frame is detached from the DOM.
 IPC_SYNC_MESSAGE_CONTROL2_1(FrameHostMsg_CreateChildFrame,
                             int32 /* parent_routing_id */,
                             std::string /* frame_name */,
@@ skipping 128 matching lines @@
 // content area, and a context menu should be shown for it. The params
 // object contains information about the node(s) that were selected when the
 // user right clicked.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_ContextMenu, content::ContextMenuParams)
 
 // Initial drawing parameters for a child frame that has been swapped out to
 // another process.
 IPC_MESSAGE_ROUTED2(FrameHostMsg_InitializeChildFrame,
                     gfx::Rect /* frame_rect */,
                     float /* scale_factor */)