Browser Side Text Input State Tracking for OOPIF.

content/browser/renderer_host/render_widget_host_view_base.cc

Index: content/browser/renderer_host/render_widget_host_view_base.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_base.cc b/content/browser/renderer_host/render_widget_host_view_base.cc
index 9cdceb518eefad1e7dd47f841d32010a917e8044..f8a155488859390e828eab05fcb5b8a1bc8a5301 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -10,11 +10,18 @@
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
+#include "content/browser/renderer_host/render_view_host_delegate.h"
+#include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base_observer.h"
 #include "content/common/content_switches_internal.h"
+#include "content/common/input_messages.h"
+#include "content/common/site_isolation_policy.h"
+#include "content/common/text_input_state.h"
+#include "content/common/view_messages.h"
 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
+#include "content/public/common/browser_plugin_guest_mode.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
@@ -379,7 +386,11 @@ RenderWidgetHostViewBase::RenderWidgetHostViewBase()
       current_display_rotation_(gfx::Display::ROTATE_0),
       pinch_zoom_enabled_(content::IsPinchToZoomEnabled()),
       renderer_frame_number_(0),
-      weak_factory_(this) {}
+      text_input_state_(new TextInputState),
+      text_input_state_changed_(false),
+      weak_factory_(this) {
+  cached_text_input_state_ = text_input_state_.get();
+}
 
 RenderWidgetHostViewBase::~RenderWidgetHostViewBase() {
   DCHECK(!mouse_locked_);
@@ -566,6 +577,14 @@ bool RenderWidgetHostViewBase::HasDisplayPropertyChanged(gfx::NativeView view) {
   return true;
 }
 
+bool RenderWidgetHostViewBase::ShouldProcessTextInputState() {
+  if (text_input_state_changed_) {
+    text_input_state_changed_ = false;
+    return true;
+  }
+  return false;
+}
+
 base::WeakPtr<RenderWidgetHostViewBase> RenderWidgetHostViewBase::GetWeakPtr() {
   return weak_factory_.GetWeakPtr();
 }
@@ -720,6 +739,44 @@ void RenderWidgetHostViewBase::TransformPointToLocalCoordSpace(
   *transformed_point = point;
 }
 
+void RenderWidgetHostViewBase::TextInputStateChanged(
+    const TextInputState& params) {
+  text_input_state_changed_ = true;
+#if !defined(OS_ANDROID)
+  if (params.type == text_input_state_->type &&
+      params.can_compose_inline == text_input_state_->can_compose_inline
+#if !defined(OS_MACOSX)
+      && params.mode == text_input_state_->mode &&
+      params.flags == text_input_state_->flags
+#endif
+      )
+    text_input_state_changed_ = false;
+#else
+  if (params.is_non_ime_change) {
+    // Sends an acknowledgement to the renderer of a processed IME event.
+    GetRenderWidgetHost()->Send(
+        new InputMsg_ImeEventAck(GetRenderWidgetHost()->GetRoutingID()));
+  }
+#endif
+
+  if (text_input_state_changed_)
+    *text_input_state_ = params;
+
+  UpdateTextInputState();
+}
+
+RenderWidgetHostViewBase* RenderWidgetHostViewBase::GetFocusedView() {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return this;
+  RenderWidgetHostViewBase* focused_view =
+      RenderWidgetHostImpl::From(GetRenderWidgetHost())
+          ->delegate()
+          ->GetFocusedView();
+  return !!focused_view ? focused_view : this;
+}
+
+void RenderWidgetHostViewBase::UpdateTextInputState() {}
+
 void RenderWidgetHostViewBase::AddObserver(
     RenderWidgetHostViewBaseObserver* observer) {
   observers_.AddObserver(observer);