Track composition range and character bounds on the browser side (Mac)

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 #include <stdint.h>
@@ skipping 881 matching lines @@
 #endif
   }
 }
 
 void RenderWidgetHostViewMac::OnImeCancelComposition(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* updated_view) {
   [cocoa_view_ cancelComposition];
 }
 
-void RenderWidgetHostViewMac::ImeCompositionRangeChanged(
-    const gfx::Range& range,
-    const std::vector<gfx::Rect>& character_bounds) {
+void RenderWidgetHostViewMac::OnImeCompositionRangeChanged(
+    TextInputManager* text_input_manager,
+    RenderWidgetHostViewBase* updated_view) {
+  const TextInputManager::CompositionRangeInfo* info =
+      GetTextInputManager()->GetCompositionRangeInfo();
   // The RangeChanged message is only sent with valid values. The current
   // caret position (start == end) will be sent if there is no IME range.
-  [cocoa_view_ setMarkedRange:range.ToNSRange()];
-  composition_range_ = range;
-  composition_bounds_ = character_bounds;
+  [cocoa_view_ setMarkedRange:info->range.ToNSRange()];
+  composition_range_ = info->range;
+  composition_bounds_ = info->character_bounds;
 }
 
 void RenderWidgetHostViewMac::RenderProcessGone(base::TerminationStatus status,
                                                 int error_code) {
   Destroy();
 }
 
 void RenderWidgetHostViewMac::Destroy() {
   // SurfaceClientIds registered with RenderWidgetHostInputEventRouter
   // have already been cleared when RenderWidgetHostViewBase notified its
@@ skipping 2324 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end