Tracking text selection on the browser side in OOPIF.

content/browser/renderer_host/text_input_manager.cc

Index: content/browser/renderer_host/text_input_manager.cc
diff --git a/content/browser/renderer_host/text_input_manager.cc b/content/browser/renderer_host/text_input_manager.cc
index 07c5de9f65fc2367565ab37e3dce5874eb56369c..09e8862bbe252a0a98077add7c18ac3b68ece2db 100644
--- a/content/browser/renderer_host/text_input_manager.cc
+++ b/content/browser/renderer_host/text_input_manager.cc
@@ -4,10 +4,12 @@
 
 #include "content/browser/renderer_host/text_input_manager.h"
 
+#include "base/strings/string16.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/view_messages.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/range/range.h"
 
 namespace content {
 
@@ -72,6 +74,14 @@ const std::vector<gfx::Rect>* TextInputManager::GetCompositionCharacterBounds()
              : nullptr;
 }
 
+const TextInputManager::TextSelection* TextInputManager::GetTextSelection(
+    RenderWidgetHostViewBase* view) const {
+  DCHECK(!view || IsRegistered(view));
+  if (!view)
+    view = active_view_;
+  return !!view ? &text_selection_map_.at(view) : nullptr;
+}
+
 void TextInputManager::UpdateTextInputState(
     RenderWidgetHostViewBase* view,
     const TextInputState& text_input_state) {
@@ -174,12 +184,28 @@ void TextInputManager::ImeCompositionRangeChanged(
                     OnImeCompositionRangeChanged(this, view));
 }
 
+void TextInputManager::SelectionChanged(RenderWidgetHostViewBase* view,
+                                        const base::string16& text,
+                                        size_t offset,
+                                        const gfx::Range& range) {
+  DCHECK(IsRegistered(view));
+
+  text_selection_map_[view].text = text;
+  text_selection_map_[view].offset = offset;
+  text_selection_map_[view].range.set_start(range.start());
+  text_selection_map_[view].range.set_end(range.end());
+
+  FOR_EACH_OBSERVER(Observer, observer_list_,
+                    OnTextSelectionChanged(this, view));
+}
+
 void TextInputManager::Register(RenderWidgetHostViewBase* view) {
   DCHECK(!IsRegistered(view));
 
   text_input_state_map_[view] = TextInputState();
   selection_region_map_[view] = SelectionRegion();
   composition_range_info_map_[view] = CompositionRangeInfo();
+  text_selection_map_[view] = TextSelection();
 }
 
 void TextInputManager::Unregister(RenderWidgetHostViewBase* view) {
@@ -188,6 +214,7 @@ void TextInputManager::Unregister(RenderWidgetHostViewBase* view) {
   text_input_state_map_.erase(view);
   selection_region_map_.erase(view);
   composition_range_info_map_.erase(view);
+  text_selection_map_.erase(view);
 
   if (active_view_ == view) {
     active_view_ = nullptr;
@@ -238,4 +265,12 @@ TextInputManager::CompositionRangeInfo::CompositionRangeInfo(
 
 TextInputManager::CompositionRangeInfo::~CompositionRangeInfo() {}
 
+TextInputManager::TextSelection::TextSelection()
+    : offset(0), range(gfx::Range::InvalidRange()), text(base::string16()) {}
+
+TextInputManager::TextSelection::TextSelection(const TextSelection& other) =
+    default;
+
+TextInputManager::TextSelection::~TextSelection() {}
+
 }  // namespace content