Add an interface to gather text surrounding the selection.

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index 6c003df44620f384a828e460fbba36473f982419..29964fc09751e515ffc8b5b4ba1dd8114aef9774 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -9,7 +9,6 @@
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_weak_ref.h"
-#include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/i18n/rtl.h"
 #include "base/memory/scoped_ptr.h"
@@ -62,6 +61,9 @@ class ContentViewCoreImpl : public ContentViewCore,
   virtual float GetDpiScale() const OVERRIDE;
   virtual void PauseVideo() OVERRIDE;
   virtual void PauseOrResumeGeolocation(bool should_pause) OVERRIDE;
+  virtual void RequestTextSurroundingSelection(
+      int max_length,
+      const TextSurroundingSelectionCallback& callback) OVERRIDE;
 
   // --------------------------------------------------------------------------
   // Methods called from Java via JNI
@@ -226,6 +228,11 @@ class ContentViewCoreImpl : public ContentViewCore,
 
   jint GetCurrentRenderProcessId(JNIEnv* env, jobject obj);
 
+  void OnTextSurroundingSelectionResponse(const base::string16& content,
+                                          int start_offset,
+                                          int end_offset);
+
+
   // --------------------------------------------------------------------------
   // Public methods that call to Java via JNI
   // --------------------------------------------------------------------------
@@ -378,6 +385,8 @@ class ContentViewCoreImpl : public ContentViewCore,
   scoped_ptr<JavaBridgeDispatcherHostManager>
       java_bridge_dispatcher_host_manager_;
 
+  TextSurroundingSelectionCallback text_surroundings_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(ContentViewCoreImpl);
 };