Support InputMethodManager#updateCursorAnchorInfo for Android 5.0 (C++ version)

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 11d2113aa953b31768fbe167c4faa13ec3543649..db62ef485c62e880b71c9ae62fb8b8be5288ada8 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -27,6 +27,7 @@
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/WebKit/public/platform/WebGraphicsContext3D.h"
 #include "ui/base/android/window_android_observer.h"
+#include "ui/base/ime/android/cursor_anchor_info_sender.h"
 #include "ui/events/gesture_detection/filtered_gesture_provider.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/geometry/vector2d_f.h"
@@ -47,6 +48,11 @@ class WebTouchEvent;
 class WebMouseEvent;
 }
 
+namespace ui {
+class CursorAnchorInfoBuilder;
+class CursorAnchorInfoController;
+}
+
 namespace content {
 class ContentViewCoreImpl;
 class OverscrollControllerAndroid;
@@ -81,6 +87,7 @@ class ReadbackRequest {
 class CONTENT_EXPORT RenderWidgetHostViewAndroid
     : public RenderWidgetHostViewBase,
       public cc::DelegatedFrameResourceCollectionClient,
+      public ui::CursorAnchorInfoSender,
       public ui::GestureProviderClient,
       public ui::WindowAndroidObserver,
       public DelegatedFrameEvictorClient,
@@ -183,6 +190,10 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
   // cc::DelegatedFrameResourceCollectionClient implementation.
   virtual void UnusedResourcesAreAvailable() override;
 
+  // ui::CursorAnchorInfoControllerSender implementation.
+  virtual void SendCursorAnchorInfo(
+      ui::CursorAnchorInfoBuilder* builder) override;
+
   // ui::GestureProviderClient implementation.
   virtual void OnGestureEvent(const ui::GestureEventData& gesture) override;
 
@@ -224,6 +235,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
   void SendMouseWheelEvent(const blink::WebMouseWheelEvent& event);
   void SendGestureEvent(const blink::WebGestureEvent& event);
 
+  bool RequestCursorUpdates(uint32 cursor_update_mode);
+
   void OnTextInputStateChanged(const ViewHostMsg_TextInputState_Params& params);
   void OnDidChangeBodyBackgroundColor(SkColor color);
   void OnStartContentIntent(const GURL& content_url);
@@ -350,6 +363,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
 
   ImeAdapterAndroid ime_adapter_android_;
 
+  scoped_ptr<ui::CursorAnchorInfoController> cursor_anchor_info_controller_;
+
   // Body background color of the underlying document.
   SkColor cached_background_color_;