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

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index fad565d27c6eaef57d89c1087056567fb40a7363..f9d6ba4c9a69789e1517cdd8cc0337ced0339b92 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -140,6 +140,7 @@
 #include "public/web/WebElement.h"
 #include "public/web/WebFrame.h"
 #include "public/web/WebFrameClient.h"
+#include "public/web/WebFrameWidget.h"
 #include "public/web/WebHitTestResult.h"
 #include "public/web/WebInputElement.h"
 #include "public/web/WebMeaningfulLayout.h"
@@ -2170,7 +2171,13 @@ WebInputEventResult WebViewImpl::handleInputEvent(const WebInputEvent& inputEven
     TemporaryChange<const WebInputEvent*> currentEventChange(m_currentInputEvent, &inputEvent);
     UIEventWithKeyState::clearNewTabModifierSetFromIsolatedWorld();
 
-    if (isPointerLocked() && WebInputEvent::isMouseEventType(inputEvent.type)) {
+    bool isPointerLocked = false;

[dcheng, 2016/06/07 05:07:55]

Sigh. One day we won't need this I guess =)

+    if (WebFrameWidget* widget = mainFrameImpl()->frameWidget()) {
+        if (WebWidgetClient* client = widget->client())
+            isPointerLocked = client->isPointerLocked();
+    }
+
+    if (isPointerLocked && WebInputEvent::isMouseEventType(inputEvent.type)) {
         pointerLockMouseEvent(inputEvent);
         return WebInputEventResult::HandledSystem;
     }
@@ -4443,22 +4450,6 @@ void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
     m_scheduler->setPageVisible(visible);
 }
 
-bool WebViewImpl::requestPointerLock()
-{
-    return m_client && m_client->requestPointerLock();
-}
-
-void WebViewImpl::requestPointerUnlock()
-{
-    if (m_client)
-        m_client->requestPointerUnlock();
-}
-
-bool WebViewImpl::isPointerLocked()
-{
-    return m_client && m_client->isPointerLocked();
-}
-
 void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event)
 {
     OwnPtr<UserGestureIndicator> gestureIndicator;