Move handling of DraggableRegionsChanged notification from "view" to "frame".

third_party/WebKit/Source/web/LocalFrameClientImpl.cpp

Index: third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
index 18f95199faf225ed6837ece12eee81a03b468512..940ace10541e4519db7d6ae6d6c44dda82d6a665 100644
--- a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
@@ -1052,4 +1052,9 @@ std::unique_ptr<blink::WebURLLoader> LocalFrameClientImpl::CreateURLLoader() {
   return web_frame_->CreateURLLoader();
 }
 
+void LocalFrameClientImpl::AnnotatedRegionsChanged() {
+  if (web_frame_->Client())

[dcheng, 2017/06/07 20:22:35]

Nit: no null check needed here, if LocalFrameClient is reachable, WebFrameClient
must be (with one exception, but this code shouldn't hit it)

[Łukasz Anforowicz, 2017/06/08 16:29:24]

Done - thanks for pointing this out (I was just cargo-culting from the
surrounding methods and noticed that some of them do check for nullness).

+    web_frame_->Client()->DraggableRegionsChanged();
+}
+
 }  // namespace blink