Implement pointer lock API for out-of-process iframes.

third_party/WebKit/Source/web/ChromeClientImpl.cpp

Index: third_party/WebKit/Source/web/ChromeClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/ChromeClientImpl.cpp b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
index d415d339f26e756b3c382f56434f2413ff7f6d18..d8f04151bddc84bc5ac5c6fab3de38736d419ee5 100644
--- a/third_party/WebKit/Source/web/ChromeClientImpl.cpp
+++ b/third_party/WebKit/Source/web/ChromeClientImpl.cpp
@@ -959,14 +959,16 @@ void ChromeClientImpl::setTouchAction(TouchAction touchAction)
         client->setTouchAction(static_cast<WebTouchAction>(touchAction));
 }
 
-bool ChromeClientImpl::requestPointerLock()
+bool ChromeClientImpl::requestPointerLock(LocalFrame* frame)
 {
-    return m_webView->requestPointerLock();
+    LocalFrame* localRoot = frame->localFrameRoot();
+    return WebLocalFrameImpl::fromFrame(localRoot)->frameWidget()->client()->requestPointerLock();
 }
 
-void ChromeClientImpl::requestPointerUnlock()
+void ChromeClientImpl::requestPointerUnlock(LocalFrame* frame)
 {
-    return m_webView->requestPointerUnlock();
+    LocalFrame* localRoot = frame->localFrameRoot();
+    return WebLocalFrameImpl::fromFrame(localRoot)->frameWidget()->client()->requestPointerUnlock();
 }
 
 void ChromeClientImpl::annotatedRegionsChanged()