Reland of Extracting placeholder information from Webkit to Blimp

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2f79ac027a3144ba9006282e9f8b529ea2d58d43..64b819b6ab7bd3b7229fc723eadaef62cdbed5bd 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -75,6 +75,7 @@
 #include "content/public/common/context_menu_params.h"
 #include "content/public/common/file_chooser_file_info.h"
 #include "content/public/common/file_chooser_params.h"
+#include "content/public/common/form_field_data.h"
 #include "content/public/common/isolated_world_ids.h"
 #include "content/public/common/page_state.h"
 #include "content/public/common/resource_response.h"
@@ -1600,6 +1601,8 @@
     IPC_MESSAGE_HANDLER(FrameMsg_ReloadLoFiImages, OnReloadLoFiImages)
     IPC_MESSAGE_HANDLER(FrameMsg_TextSurroundingSelectionRequest,
                         OnTextSurroundingSelectionRequest)
+    IPC_MESSAGE_HANDLER(FrameMsg_FocusedFormFieldDataRequest,
+                        OnFocusedFormFieldDataRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_SetAccessibilityMode,
                         OnSetAccessibilityMode)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_SnapshotTree,
@@ -2323,6 +2326,32 @@
       surroundingText.textContent(),
       surroundingText.startOffsetInTextContent(),
       surroundingText.endOffsetInTextContent()));
+}
+
+void RenderFrameImpl::OnFocusedFormFieldDataRequest(int request_id) {
+  DCHECK(frame_);
+
+  // In case of early return, the IPC response message is always needed in
+  // order to avoid leaks in the browser for unacknowledged requests.
+  if (frame_ != render_view_->GetWebView()->focusedFrame() ||
+      frame_->document().focusedElement().isNull()) {
+    Send(new FrameHostMsg_FocusedFormFieldDataResponse(routing_id_, request_id,
+                                                       FormFieldData()));
+    return;
+  }
+
+  WebElement element = frame_->document().focusedElement();
+
+  DCHECK(GetRenderWidget()->GetWebWidget());
+  blink::WebTextInputInfo info =
+      GetRenderWidget()->GetWebWidget()->textInputInfo();
+  FormFieldData field;
+  field.text = info.value.utf8();
+  field.placeholder = element.getAttribute("placeholder").utf8();
+  field.text_input_type = GetRenderWidget()->GetTextInputType();
+
+  Send(new FrameHostMsg_FocusedFormFieldDataResponse(routing_id_, request_id,
+                                                     field));
 }
 
 bool RenderFrameImpl::RunJavaScriptMessage(JavaScriptMessageType type,