input: Remove dead code.

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 d7900c6777ba6f2d29c6477ee707883963bdc89f..150db12e594ace04d1c7d92b8498888e753a7d2e 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -138,7 +138,6 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
                               InputEventAckState ack_result) override;
   InputEventAckState FilterInputEvent(
       const blink::WebInputEvent& input_event) override;
-  void OnSetNeedsFlushInput() override;
   void GestureEventAck(const blink::WebGestureEvent& event,
                        InputEventAckState ack_result) override;
   BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
@@ -328,9 +327,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
   void OnLostResources();
 
   enum BeginFrameRequestType {
-    FLUSH_INPUT = 1 << 0,
-    BEGIN_FRAME = 1 << 1,
-    PERSISTENT_BEGIN_FRAME = 1 << 2
+    BEGIN_FRAME = 1 << 0,
+    PERSISTENT_BEGIN_FRAME = 1 << 1
   };
   void AddBeginFrameRequest(BeginFrameRequestType request);
   void ClearBeginFrameRequest(BeginFrameRequestType request);