Extracting placeholder information from Webkit to Blimp

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 24129edc19f8293342b6b580c309a230d6b7d9ee..094546197ad09e99412d1b45ef52746a12731b08 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -15,7 +15,9 @@
 #include "content/browser/renderer_host/render_widget_host_view_base_observer.h"
 #include "content/browser/renderer_host/text_input_manager.h"
 #include "content/common/content_switches_internal.h"
+#include "content/common/view_messages.h"
 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
+#include "content/public/common/form_field_data.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/geometry/point_conversions.h"
@@ -29,6 +31,8 @@ namespace {
 // How many microseconds apart input events should be flushed.
 const int kFlushInputRateInUs = 16666;
 
+// For tracking requests for form field data.
+int next_request_id_ = 0;
 }
 
 RenderWidgetHostViewBase::RenderWidgetHostViewBase()
@@ -157,6 +161,28 @@ ui::TextInputClient* RenderWidgetHostViewBase::GetTextInputClient() {
   return NULL;
 }
 
+void RenderWidgetHostViewBase::OnFocusedFormFieldDataReply(
+    int request_id,
+    const FormFieldData& field_data) {
+  DCHECK(extract_form_field_data_callbacks_.find(request_id) !=
+         extract_form_field_data_callbacks_.end());
+  extract_form_field_data_callbacks_[request_id].Run(field_data);

[David Trainor- moved to gerrit, 2016/11/03 04:25:49]

What if we have callbacks when the RWHV dies?  Should we just trigger all
callbacks with an invalid result set?

+  extract_form_field_data_callbacks_.erase(request_id);
+}
+
+void RenderWidgetHostViewBase::GetFocusedFormFieldData(
+    ExtractFormFieldDataCallback& reply) {
+  if (!GetRenderWidgetHost()) {
+    reply.Run(FormFieldData());
+    return;
+  }
+
+  int request_id = ++next_request_id_;
+  extract_form_field_data_callbacks_[request_id] = reply;
+  GetRenderWidgetHost()->Send(new ViewMsg_GetFocusedFormFieldData(
+      GetRenderWidgetHost()->GetRoutingID(), request_id));
+}
+
 bool RenderWidgetHostViewBase::IsShowingContextMenu() const {
   return showing_context_menu_;
 }