Replace ViewHostMsg_TextInputState_Params with content::TextInputState.

content/browser/frame_host/render_widget_host_view_guest.h

Index: content/browser/frame_host/render_widget_host_view_guest.h
diff --git a/content/browser/frame_host/render_widget_host_view_guest.h b/content/browser/frame_host/render_widget_host_view_guest.h
index 1267fe93184177d5a54b9e45698d6afbc0030844..e5aee57995758229a2f4f16d6e6ec7f5dca7e4fb 100644
--- a/content/browser/frame_host/render_widget_host_view_guest.h
+++ b/content/browser/frame_host/render_widget_host_view_guest.h
@@ -24,13 +24,12 @@
 #include "ui/gfx/geometry/vector2d_f.h"
 #include "ui/gfx/native_widget_types.h"
 
-struct ViewHostMsg_TextInputState_Params;
-
 namespace content {
 class BrowserPluginGuest;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 struct NativeWebKeyboardEvent;
+struct TextInputState;
 
 // See comments in render_widget_host_view.h about this class and its members.
 // This version is for the BrowserPlugin which handles a lot of the
@@ -78,8 +77,7 @@ class CONTENT_EXPORT RenderWidgetHostViewGuest
   void InitAsFullscreen(RenderWidgetHostView* reference_host_view) override;
   void UpdateCursor(const WebCursor& cursor) override;
   void SetIsLoading(bool is_loading) override;
-  void TextInputStateChanged(
-      const ViewHostMsg_TextInputState_Params& params) override;
+  void TextInputStateChanged(const TextInputState& params) override;
   void ImeCancelComposition() override;
 #if defined(OS_MACOSX) || defined(USE_AURA)
   void ImeCompositionRangeChanged(