Support IMM32 reconversion on Windows

content/browser/renderer_host/render_widget_host_view_win.h

Index: content/browser/renderer_host/render_widget_host_view_win.h
diff --git a/content/browser/renderer_host/render_widget_host_view_win.h b/content/browser/renderer_host/render_widget_host_view_win.h
index 72eec9b95421da4a8fe5247facd4771d2d211c2c..14a2403a34d6aa24833efc7d2afc33e7acbff2a1 100644
--- a/content/browser/renderer_host/render_widget_host_view_win.h
+++ b/content/browser/renderer_host/render_widget_host_view_win.h
@@ -104,6 +104,7 @@ class RenderWidgetHostViewWin
     MESSAGE_HANDLER(WM_IME_STARTCOMPOSITION, OnImeStartComposition)
     MESSAGE_HANDLER(WM_IME_COMPOSITION, OnImeComposition)
     MESSAGE_HANDLER(WM_IME_ENDCOMPOSITION, OnImeEndComposition)
+    MESSAGE_HANDLER(WM_IME_REQUEST, OnImeRequest)
     MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseEvent)
     MESSAGE_HANDLER(WM_MOUSELEAVE, OnMouseEvent)
     MESSAGE_HANDLER(WM_LBUTTONDOWN, OnMouseEvent)
@@ -156,9 +157,13 @@ class RenderWidgetHostViewWin
   virtual void SetIsLoading(bool is_loading) OVERRIDE;
   virtual void TextInputStateChanged(ui::TextInputType type,
                                      bool can_compose_inline) OVERRIDE;
+  virtual void SelectionChanged(const string16& text,
+                                size_t offset,
+                                const ui::Range& range) OVERRIDE;
   virtual void SelectionBoundsChanged(const gfx::Rect& start_rect,
                                       const gfx::Rect& end_rect) OVERRIDE;
   virtual void ImeCancelComposition() OVERRIDE;
+  virtual void ImeCompositionRangeChanged(const ui::Range& range) OVERRIDE;
   virtual void DidUpdateBackingStore(
       const gfx::Rect& scroll_rect, int scroll_dx, int scroll_dy,
       const std::vector<gfx::Rect>& copy_rects) OVERRIDE;
@@ -219,6 +224,8 @@ class RenderWidgetHostViewWin
       UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled);
   LRESULT OnImeEndComposition(
       UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled);
+  LRESULT OnImeRequest(
+      UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled);
   LRESULT OnMouseEvent(
       UINT message, WPARAM wparam, LPARAM lparam, BOOL& handled);
   LRESULT OnKeyEvent(
@@ -300,6 +307,9 @@ class RenderWidgetHostViewWin
 
   void HandleLockedMouseEvent(UINT message, WPARAM wparam, LPARAM lparam);
 
+  LRESULT OnDocumentFeed(RECONVERTSTRING* reconv);
+  LRESULT OnReconvertString(RECONVERTSTRING* reconv);
+
   // The associated Model.  While |this| is being Destroyed,
   // |render_widget_host_| is NULL and the Windows message loop is run one last
   // time. Message handlers must check for a NULL |render_widget_host_|.
@@ -407,6 +417,12 @@ class RenderWidgetHostViewWin
   // back, we regard the mouse movement as (0, 0).
   bool ignore_mouse_movement_;
 
+  // Stores current selection for IME reconversion.
+  string16 selection_text_;
+  size_t selection_text_offset_;
+  ui::Range selection_range_;
+  ui::Range composition_range_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewWin);
 };