The first step for enabling off-the-spot IME on Pepper on ChromeOS/Linux.

content/browser/renderer_host/render_widget_host.cc

Index: content/browser/renderer_host/render_widget_host.cc
diff --git a/content/browser/renderer_host/render_widget_host.cc b/content/browser/renderer_host/render_widget_host.cc
index 2ca9173d08d39270bd8f3d1afc4aa4fead9a6deb..4c57e4462e25bef68dc499ff71e8ea9138b27310 100644
--- a/content/browser/renderer_host/render_widget_host.cc
+++ b/content/browser/renderer_host/render_widget_host.cc
@@ -180,6 +180,8 @@ bool RenderWidgetHost::OnMessageReceived(const IPC::Message &msg) {
                         OnMsgImeCancelComposition)
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidActivateAcceleratedCompositing,
                         OnMsgDidActivateAcceleratedCompositing)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PpapiPluginFocusChanged,
+                        OnMsgPpapiPluginFocusChanged)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetScreenInfo, OnMsgGetScreenInfo)
     IPC_MESSAGE_HANDLER(ViewHostMsg_GetWindowRect, OnMsgGetWindowRect)
@@ -1045,6 +1047,11 @@ void RenderWidgetHost::OnMsgDidActivateAcceleratedCompositing(bool activated) {
 #endif
 }
 
+void RenderWidgetHost::OnMsgPpapiPluginFocusChanged(bool focused) {
+  if (view_)
+    view_->PpapiPluginFocusChanged(focused);
+}
+
 #if defined(OS_MACOSX)
 
 void RenderWidgetHost::OnMsgGetScreenInfo(gfx::NativeViewId view,