Hide location bar on Javascript-initiated scroll.

content/common/view_messages.h

 // Copyright (c) 2012 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 page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/process.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
+#include "cc/input/top_controls_state.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/output/compositor_frame_ack.h"
 #include "content/common/content_export.h"
 #include "content/common/content_param_traits.h"
 #include "content/common/navigation_gesture.h"
 #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/common_param_traits.h"
 #include "content/public/common/context_menu_params.h"
@@ skipping 45 matching lines @@
 
 IPC_ENUM_TRAITS(AccessibilityMode)
 IPC_ENUM_TRAITS(ViewMsg_Navigate_Type::Value)
 IPC_ENUM_TRAITS(WebKit::WebContextMenuData::MediaType)
 IPC_ENUM_TRAITS(WebKit::WebMediaPlayerAction::Type)
 IPC_ENUM_TRAITS(WebKit::WebPluginAction::Type)
 IPC_ENUM_TRAITS(WebKit::WebPopupType)
 IPC_ENUM_TRAITS(WebKit::WebTextDirection)
 IPC_ENUM_TRAITS(WebMenuItem::Type)
 IPC_ENUM_TRAITS(WindowContainerType)
+IPC_ENUM_TRAITS(cc::TopControlsState)
 IPC_ENUM_TRAITS(content::FaviconURL::IconType)
 IPC_ENUM_TRAITS(content::FileChooserParams::Mode)
 IPC_ENUM_TRAITS(content::JavaScriptMessageType)
 IPC_ENUM_TRAITS(content::NavigationGesture)
 IPC_ENUM_TRAITS(content::PageZoom)
 IPC_ENUM_TRAITS(content::RendererPreferencesHintingEnum)
 IPC_ENUM_TRAITS(content::RendererPreferencesSubpixelRenderingEnum)
 IPC_ENUM_TRAITS(content::StopFindAction)
 IPC_ENUM_TRAITS(content::ThreeDAPIType)
 IPC_ENUM_TRAITS(media::ChannelLayout)
@@ skipping 1175 matching lines @@
                     std::vector<int> /* selected indices */)
 
 // Tells the renderer to try to revert to the zoom level we were at before
 // ViewMsg_ScrollFocusedEditableNodeIntoView was called.
 IPC_MESSAGE_ROUTED0(ViewMsg_UndoScrollFocusedEditableNodeIntoView)
 
 // This message relays the beginning or end of a batch event in the IME.
 IPC_MESSAGE_ROUTED1(ViewMsg_ImeBatchStateChanged,
     bool /* is_begin */)
 
-// Notifies the renderer whether hiding/showing the top controls is enabled
-// and whether or not to animate to the proper state.
+// Notifies the renderer whether hiding/showing the top controls is enabled,
+// what the current state should be, and whether or not to animate to the
+// proper state.
 IPC_MESSAGE_ROUTED3(ViewMsg_UpdateTopControlsState,
-                    bool /* enable_hiding */,
-                    bool /* enable_showing */,
+                    cc::TopControlsState /* constraints */,
+                    cc::TopControlsState /* current */,
                     bool /* animate */)
 
 IPC_MESSAGE_ROUTED0(ViewMsg_ShowImeIfNeeded)
 
 // Sent by the browser when the display vsync signal was triggered and the
 // renderer should generate a new frame.
 IPC_MESSAGE_ROUTED1(ViewMsg_DidVSync,
                     base::TimeTicks /* frame_time */)
 
 #elif defined(OS_MACOSX)
@@ skipping 125 matching lines @@
 // Send in response to a ViewMsg_UpdateScreenRects so that the renderer can
 // throttle these messages.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_UpdateScreenRects_ACK)
 
 // Sent by the renderer process to request that the browser move the view.
 // This corresponds to the window.resizeTo() and window.moveTo() APIs, and
 // the browser may ignore this message.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_RequestMove,
                     gfx::Rect /* position */)
 
+// Sent by the renderer process to notify the browser that the web page has
+// programmatically scrolled.
+IPC_MESSAGE_ROUTED1(ViewHostMsg_DidProgrammaticallyScroll,
+                    gfx::Point /* scroll_point */)

[aelias_OOO_until_Jul13, 2013/05/02 18:44:23]

Let's change this to gfx::Vector2d (and likewise everywhere else in this patch),
that's the new conventional type for scroll offsets in Chromium code.

[Michael van Ouwerkerk, 2013/05/08 16:21:15]

Done.

+
 // Notifies the browser that a frame in the view has changed. This message
 // has a lot of parameters and is packed/unpacked by functions defined in
 // render_messages.h.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_FrameNavigate,
                     ViewHostMsg_FrameNavigate_Params)
 
 // Used to tell the parent that the user right clicked on an area of the
 // 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.
@@ skipping 845 matching lines @@
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.