Revert of Add support for deleting non preceeding surrounding text in chrome.input.ime.deleteSurroundingText

chrome/browser/chromeos/input_method/input_method_engine.cc

Index: chrome/browser/chromeos/input_method/input_method_engine.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_engine.cc b/chrome/browser/chromeos/input_method/input_method_engine.cc
index 331d3bc8f6309ca330d34ea15a737c2876a2405b..5572736318ba8d52a0655bfdddf319d57211bd92 100644
--- a/chrome/browser/chromeos/input_method/input_method_engine.cc
+++ b/chrome/browser/chromeos/input_method/input_method_engine.cc
@@ -498,6 +498,9 @@
     return false;
   }
 
+  if (offset < 0 && static_cast<size_t>(-1 * offset) != size_t(number_of_chars))
+    return false;  // Currently we can only support preceding text.
+
   // TODO(nona): Return false if there is ongoing composition.
 
   IMEInputContextHandlerInterface* input_context =