Revert of Enable find-in-page across GuestViews.

pdf/out_of_process_instance.cc

Index: pdf/out_of_process_instance.cc
diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc
index fd69a5aadc3d3e216d04f3fd35f3c25c2ce5253e..7dd41e5f59bdfd1a0c488eaf8ab2f6b2b50dae0f 100644
--- a/pdf/out_of_process_instance.cc
+++ b/pdf/out_of_process_instance.cc
@@ -347,8 +347,9 @@ bool OutOfProcessInstance::Init(uint32_t argc,
     }
   }
 
-  // Allow the plugin to handle find requests.
-  SetPluginToHandleFindRequests();
+  // Only allow the plugin to handle find requests if it is full frame.
+  if (full_)
+    SetPluginToHandleFindRequests();
 
   text_input_ = base::MakeUnique<pp::TextInput_Dev>(this);