Require ACK for editor-related changes not originating from browser.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 3b86d0df9d2b7028b9c5b92517d15901c2091a15..5bb1b532d2e66ddc22564b0ef1e3aeeae6485027 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -435,6 +435,12 @@ const char kEnableSmoothScrolling[]         = "enable-smooth-scrolling";
 // Enables StatsTable, logging statistics to a global named shared memory table.
 const char kEnableStatsTable[]              = "enable-stats-table";
 
+// Enables a very strict scheme of handling IME events. Some changes that relate
+// to IME on on the renderer side requires acknowledgement from the browser
+// process. If IME events are sent to the renderer while there are outstanding
+// acknowledgements, the IME event will be dropped.
+const char kEnableStrictImeProcessing[]     = "enable-strict-ime-processing";
+
 // Experimentally ensures that each renderer process:
 // 1) Only handles rendering for pages from a single site, apart from iframes.
 // (Note that a page can reference content from multiple origins due to images,