Refactor Samsung SmartClip implementation.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index 5f003ad68a6f90fb139e9ecb917169135761ec97..eb77588b2ecc23fad0e307cb2bf94a8aa6147a4b 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -119,6 +119,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   using AXTreeSnapshotCallback =
       base::Callback<void(
           const ui::AXTreeUpdate&)>;
+  using SmartClipCallback = base::Callback<void(const base::string16& text,
+                                                const base::string16& html)>;
 
   // An accessibility reset is only allowed to prevent very rare corner cases
   // or race conditions where the browser and renderer get out of sync. If
@@ -474,6 +476,11 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // renderer process to change the accessibility mode.
   void UpdateAccessibilityMode();
 
+  void RequestSmartClipExtract(SmartClipCallback callback, gfx::Rect rect);
+  void OnSmartClipDataExtracted(int id,
+                                base::string16 text,
+                                base::string16 html);
+
   // Request a one-time snapshot of the accessibility tree without changing
   // the accessibility mode.
   void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback);
@@ -1056,6 +1063,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   // accessibility tree snapshot calls created by RequestAXTreeSnapshot.
   std::map<int, AXTreeSnapshotCallback> ax_tree_snapshot_callbacks_;
 
+  std::map<int, SmartClipCallback> smart_clip_callbacks_;
+
   // Callback when an event is received, for testing.
   base::Callback<void(RenderFrameHostImpl*, ui::AXEvent, int)>
       accessibility_testing_callback_;