Implement support for Mac Zoom following focus and caret

content/browser/renderer_host/render_widget_host_view_mac.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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_
 
 #import <Cocoa/Cocoa.h>
 #include <IOSurface/IOSurface.h>
 #include <stddef.h>
@@ skipping 284 matching lines @@
                                   SkColorType preferred_color_type) override;
   void CopyFromCompositingSurfaceToVideoFrame(
       const gfx::Rect& src_subrect,
       const scoped_refptr<media::VideoFrame>& target,
       const base::Callback<void(const gfx::Rect&, bool)>& callback) override;
   bool CanCopyToVideoFrame() const override;
   void BeginFrameSubscription(
       std::unique_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) override;
   void EndFrameSubscription() override;
   ui::AcceleratedWidgetMac* GetAcceleratedWidgetMac() const override;
+  void FocusedNodeChanged(bool is_editable_node,
+                          const gfx::Rect& node_bounds_in_screen) override;
   void OnSwapCompositorFrame(uint32_t compositor_frame_sink_id,
                              cc::CompositorFrame frame) override;
   void ClearCompositorFrame() override;
   BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
       BrowserAccessibilityDelegate* delegate, bool for_root_frame) override;
   gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds) override;
   gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget() override;
 
   bool HasAcceleratedSurface(const gfx::Size& desired_size) override;
   gfx::Rect GetBoundsInRootWindow() override;
@@ skipping 31 matching lines @@
 
   // TextInputManager::Observer implementation.
   void OnUpdateTextInputStateCalled(TextInputManager* text_input_manager,
                                     RenderWidgetHostViewBase* updated_view,
                                     bool did_update_state) override;
   void OnImeCancelComposition(TextInputManager* text_input_manager,
                               RenderWidgetHostViewBase* updated_view) override;
   void OnImeCompositionRangeChanged(
       TextInputManager* text_input_manager,
       RenderWidgetHostViewBase* updated_view) override;
+  void OnSelectionBoundsChanged(
+      TextInputManager* text_input_manager,
+      RenderWidgetHostViewBase* updated_view) override;
   void OnTextSelectionChanged(TextInputManager* text_input_manager,
                               RenderWidgetHostViewBase* updated_view) override;
   // IPC::Sender implementation.
   bool Send(IPC::Message* message) override;
 
   // display::DisplayObserver implementation.
   void OnDisplayAdded(const display::Display& new_display) override;
   void OnDisplayRemoved(const display::Display& old_display) override;
   void OnDisplayMetricsChanged(const display::Display& display,
                                uint32_t metrics) override;
@@ skipping 118 matching lines @@
 
   // IPC message handlers.
   void OnGetRenderedTextCompleted(const std::string& text);
 
   // Send updated vsync parameters to the top level display.
   void UpdateDisplayVSyncParameters();
 
   // Dispatches a TTS session.
   void SpeakText(const std::string& text);
 
+  // Get the focused view that should be used for retrieving the text selection.
+  RenderWidgetHostViewBase* GetFocusedViewForTextSelection();
+
   // The associated view. This is weak and is inserted into the view hierarchy
   // to own this RenderWidgetHostViewMac object. Set to nil at the start of the
   // destructor.
   RenderWidgetHostViewCocoa* cocoa_view_;
 
   // Indicates if the page is loading.
   bool is_loading_;
 
   // Whether it's allowed to pause waiting for a new frame.
   bool allow_pause_for_resize_or_repaint_;
@@ skipping 34 matching lines @@
 
   // Factory used to safely scope delayed calls to ShutdownHost().
   base::WeakPtrFactory<RenderWidgetHostViewMac> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewMac);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_H_