[DevTools] Handle emulation in embedder, call into web API.

content/renderer/render_widget.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.
 
 #ifndef CONTENT_RENDERER_RENDER_WIDGET_H_
 #define CONTENT_RENDERER_RENDER_WIDGET_H_
 
 #include <deque>
 #include <map>
 
@@ skipping 256 matching lines @@
   // When resumed from pause in debugger while handling mouse move,
   // we should not send an extra ack (see SendAckForMouseMoveFromDebugger).
   void IgnoreAckForMouseMoveFromDebugger();
 
   // ScreenMetricsEmulator class manages screen emulation inside a render
   // widget. This includes resizing, placing view on the screen at desired
   // position, changing device scale factor, and scaling down the whole
   // widget if required to fit into the browser window.
   class ScreenMetricsEmulator;
 
-  // Emulates screen and widget metrics. Supplied values override everything
-  // coming from host.
-  void EnableScreenMetricsEmulation(
-      const blink::WebDeviceEmulationParams& params);
-  void DisableScreenMetricsEmulation();
   void SetPopupOriginAdjustmentsForEmulation(ScreenMetricsEmulator* emulator);
   gfx::Rect AdjustValidationMessageAnchor(const gfx::Rect& anchor);
 
   void ScheduleCompositeWithForcedRedraw();
 
   // Called by the compositor in single-threaded mode when a swap is posted,
   // completes or is aborted.
   void OnSwapBuffersPosted();
   void OnSwapBuffersComplete();
   void OnSwapBuffersAborted();
@@ skipping 99 matching lines @@
               const gfx::Size& physical_backing_size,
               bool top_controls_shrink_blink_size,
               float top_controls_height,
               const gfx::Size& visible_viewport_size,
               const gfx::Rect& resizer_rect,
               bool is_fullscreen,
               ResizeAck resize_ack);
   // Used to force the size of a window when running layout tests.
   void SetWindowRectSynchronously(const gfx::Rect& new_window_rect);
   virtual void SetScreenMetricsEmulationParameters(
-      float device_scale_factor,
-      const gfx::Point& root_layer_offset,
-      float root_layer_scale);
+      bool enabled,
+      const blink::WebDeviceEmulationParams& params);
 #if defined(OS_MACOSX) || defined(OS_ANDROID)
   void SetExternalPopupOriginAdjustmentsForEmulation(
       ExternalPopupMenu* popup, ScreenMetricsEmulator* emulator);
 #endif
 
   // RenderWidget IPC message handlers
   void OnHandleInputEvent(const blink::WebInputEvent* event,
                           const ui::LatencyInfo& latency_info,
                           bool keyboard_shortcut);
   void OnCursorVisibilityChange(bool is_visible);
   void OnMouseCaptureLost();
   virtual void OnSetFocus(bool enable);
   virtual void OnClose();
   void OnCreatingNewAck();
   virtual void OnResize(const ViewMsg_Resize_Params& params);
+  void OnEnableDeviceEmulation(const blink::WebDeviceEmulationParams& params);
+  void OnDisableDeviceEmulation();
   void OnColorProfile(const std::vector<char>& color_profile);
   void OnChangeResizeRect(const gfx::Rect& resizer_rect);
   virtual void OnWasHidden();
   virtual void OnWasShown(bool needs_repainting,
                           const ui::LatencyInfo& latency_info);
   void OnCreateVideoAck(int32 video_id);
   void OnUpdateVideoAck(int32 video_id);
   void OnRequestMoveAck();
   void OnSetInputMethodActive(bool is_active);
   void OnCandidateWindowShown();
@@ skipping 348 matching lines @@
   // The background color of the document body element. This is used as the
   // default background color for filling the screen areas for which we don't
   // have the actual content.
   SkColor body_background_color_;
 #endif
 
   scoped_ptr<ScreenMetricsEmulator> screen_metrics_emulator_;
 
   // Popups may be displaced when screen metrics emulation is enabled.
   // These values are used to properly adjust popup position.
-  gfx::Point popup_view_origin_for_emulation_;
-  gfx::Point popup_screen_origin_for_emulation_;
+  gfx::PointF popup_view_origin_for_emulation_;
+  gfx::PointF popup_screen_origin_for_emulation_;
   float popup_origin_scale_for_emulation_;
 
   scoped_refptr<FrameSwapMessageQueue> frame_swap_message_queue_;
   scoped_ptr<ResizingModeSelector> resizing_mode_selector_;
 
   // Lists of RenderFrameProxy objects that need to be notified of
   // compositing-related events (e.g. DidCommitCompositorFrame).
   ObserverList<RenderFrameProxy> render_frame_proxies_;
 #if defined(VIDEO_HOLE)
   ObserverList<RenderFrameImpl> video_hole_frames_;
 #endif  // defined(VIDEO_HOLE)
 
   // A list of RenderFrames associated with this RenderWidget. Notifications
   // are sent to each frame in the list for events such as changing
   // visibility state for example.
   ObserverList<RenderFrameImpl> render_frames_;
 
   ui::MenuSourceType context_menu_source_type_;
   bool has_host_context_menu_location_;
   gfx::Point host_context_menu_location_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_WIDGET_H_