[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/renderer/render_view.cc

Index: chrome/renderer/render_view.cc
diff --git a/chrome/renderer/render_view.cc b/chrome/renderer/render_view.cc
index 9b71058a5375da46a4f53eb6786e1754e80be856..946467291f64866776e3364732ec70dfb5d44db1 100644
--- a/chrome/renderer/render_view.cc
+++ b/chrome/renderer/render_view.cc
@@ -195,6 +195,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/linux/WebRenderTheme.h"
 #elif defined(OS_MACOSX)
 #include "skia/ext/skia_utils_mac.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/mac/WebTextHelper.h"
 #endif
 
 using WebKit::WebAccessibilityCache;
@@ -1070,6 +1071,11 @@ bool RenderView::OnMessageReceived(const IPC::Message& message) {
     IPC_MESSAGE_HANDLER(ViewMsg_WindowFrameChanged, OnWindowFrameChanged)
     IPC_MESSAGE_HANDLER(ViewMsg_PluginImeCompositionConfirmed,
                         OnPluginImeCompositionConfirmed)
+    IPC_MESSAGE_HANDLER(ViewMsg_CharacterIndexForPoint,
+                        OnCharacterIndexForPoint)
+    IPC_MESSAGE_HANDLER(ViewMsg_FirstRectForCharacterRange,
+                        OnFirstRectForCharacterRange)
+    IPC_MESSAGE_HANDLER(ViewMsg_StringForRange, OnStringForRange)
 #endif
     IPC_MESSAGE_HANDLER(ViewMsg_SetEditCommandsForNextKeyEvent,
                         OnSetEditCommandsForNextKeyEvent)
@@ -5659,6 +5665,24 @@ void RenderView::OnSelectPopupMenuItem(int selected_index) {
   external_popup_menu_->DidSelectItem(selected_index);
   external_popup_menu_.reset();
 }
+
+void RenderView::OnCharacterIndexForPoint(gfx::Point point) {
+  WebKit::WebTextHelper helper(webview()->mainFrame());
+  uint index = helper.characterIndexForPoint(point.x(), point.y());
+  Send(new ViewHostMsg_GotCharacterIndexForPoint(routing_id(), index));
+}
+
+void RenderView::OnFirstRectForCharacterRange(uint location, uint length) {
+  WebKit::WebTextHelper helper(webview()->mainFrame());
+  gfx::Rect rect(helper.firstRectForRange(location, length));
+  Send(new ViewHostMsg_GotFirstRectForRange(routing_id(), rect));
+}
+
+void RenderView::OnStringForRange(uint location, uint length) {
+  WebKit::WebTextHelper helper(webview()->mainFrame());
+  WebKit::WebString webstring(helper.substringInRange(location, length));
+  Send(new ViewHostMsg_GotStringForRange(routing_id(), webstring));
+}
 #endif
 
 void RenderView::AddErrorToRootConsole(const string16& message) {