Implement Input Method related WebPlugin interface for browser plugin

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 78edc465cf1b8ca8ffed686e5e6f2e4eaec56078..ec3611d4bdebb6f3e0f6e7092b16dddca78e4e25 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -1104,6 +1104,25 @@ void RenderWidgetHostImpl::DisableResizeAckCheckForTesting() {
   g_check_for_pending_resize_ack = false;
 }
 
+void RenderWidgetHostImpl::ChangeTextInputType(
+    ui::TextInputType type,
+    ui::TextInputMode input_mode,
+    bool can_compose_inline) {
+  OnTextInputTypeChanged(type, input_mode, can_compose_inline);
+}
+
+void RenderWidgetHostImpl::CancelImeComposition() {
+  OnImeCancelComposition();
+}
+
+#if defined(OS_MACOSX) || defined(OS_WIN) || defined(USE_AURA)
+void RenderWidgetHostImpl::ChangeImeCompositionRange(
+    const gfx::Range& range,
+    const std::vector<gfx::Rect>& character_bounds) {
+  OnImeCompositionRangeChanged(range, character_bounds);
+}
+#endif
+
 ui::LatencyInfo RenderWidgetHostImpl::CreateRWHLatencyInfoIfNotExist(
     const ui::LatencyInfo* original) {
   ui::LatencyInfo info;