Adds the ability for WebContentsDelegate to decide if event should be updated

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 391cc672798b32d3a790ecfc6083fc76802e2543..987e54227236641a9d2ec1cdfd8e19f5b8801b8b 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1230,7 +1230,8 @@ void RenderWidgetHostViewAura::InsertChar(const ui::KeyEvent& event) {
   if (host_ && (event_handler_->accept_return_character() ||
                 event.GetCharacter() != ui::VKEY_RETURN)) {
     // Send a blink::WebInputEvent::Char event to |host_|.
-    ForwardKeyboardEvent(NativeWebKeyboardEvent(event, event.GetCharacter()));
+    ForwardKeyboardEvent(NativeWebKeyboardEvent(event, event.GetCharacter()),
+                         nullptr);
   }
 }
 
@@ -2223,7 +2224,8 @@ void RenderWidgetHostViewAura::DetachFromInputMethod() {
 }
 
 void RenderWidgetHostViewAura::ForwardKeyboardEvent(
-    const NativeWebKeyboardEvent& event) {
+    const NativeWebKeyboardEvent& event,
+    bool* update_event) {
   RenderWidgetHostImpl* target_host = host_;
 
   // If there are multiple widgets on the page (such as when there are
@@ -2249,12 +2251,13 @@ void RenderWidgetHostViewAura::ForwardKeyboardEvent(
                                           it->argument()));
     }
 
-    target_host->ForwardKeyboardEventWithCommands(event, &edit_commands);
+    target_host->ForwardKeyboardEventWithCommands(event, &edit_commands,
+                                                  update_event);
     return;
   }
 #endif
 
-  target_host->ForwardKeyboardEvent(event);
+  target_host->ForwardKeyboardEventWithCommands(event, nullptr, update_event);
 }
 
 void RenderWidgetHostViewAura::CreateSelectionController() {