Page::chrome() should return a reference.

Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 2778 matching lines @@
 
     updateViewportArguments();
 }
 
 void Document::updateViewportArguments()
 {
     if (page() && page()->mainFrame() == frame()) {
 #ifndef NDEBUG
         m_didDispatchViewportPropertiesChanged = true;
 #endif
-        page()->chrome()->dispatchViewportPropertiesDidChange(m_viewportArguments);
+        page()->chrome().dispatchViewportPropertiesDidChange(m_viewportArguments);
     }
 }
 
 void Document::processReferrerPolicy(const String& policy)
 {
     ASSERT(!policy.isNull());
 
     m_referrerPolicy = ReferrerPolicyDefault;
 
     if (equalIgnoringCase(policy, "never"))
@@ skipping 440 matching lines @@
         }
     }
 
     if (!focusChangeBlocked && m_focusedNode) {
         // Create the AXObject cache in a focus change because Chromium relies on it.
         if (AXObjectCache* cache = axObjectCache())
             cache->handleFocusedUIElementChanged(oldFocusedNode.get(), newFocusedNode.get());
     }
 
     if (!focusChangeBlocked)
-        page()->chrome()->focusedNodeChanged(m_focusedNode.get());
+        page()->chrome().focusedNodeChanged(m_focusedNode.get());
 
 SetFocusedNodeDone:
     updateStyleIfNeeded();
     return !focusChangeBlocked;
 }
 
 void Document::getFocusableNodes(Vector<RefPtr<Node> >& nodes)
 {
     updateLayout();
 
@@ skipping 1459 matching lines @@
                 addDocumentToFullScreenChangeEventQueue(currentDoc);
                 continue;
             }
 
             // 4. Otherwise, do nothing for this document. It stays the same.
         } while (++current != docs.end());
 
         // 5. Return, and run the remaining steps asynchronously.
         // 6. Optionally, perform some animation.
         m_areKeysEnabledInFullScreen = flags & Element::ALLOW_KEYBOARD_INPUT;
-        page()->chrome()->client()->enterFullScreenForElement(element);
+        page()->chrome().client()->enterFullScreenForElement(element);
 
         // 7. Optionally, display a message indicating how the user can exit displaying the context object fullscreen.
         return;
     } while (0);
 
     m_fullScreenErrorEventTargetQueue.append(element ? element : documentElement());
     m_fullScreenChangeDelayTimer.startOneShot(0);
 }
 
 void Document::webkitCancelFullScreen()
@@ skipping 70 matching lines @@
 
     // 6. Return, and run the remaining steps asynchronously.
     // 7. Optionally, perform some animation.
 
     if (!page())
         return;
 
     // Only exit out of full screen window mode if there are no remaining elements in the
     // full screen stack.
     if (!newTop) {
-        page()->chrome()->client()->exitFullScreenForElement(m_fullScreenElement.get());
+        page()->chrome().client()->exitFullScreenForElement(m_fullScreenElement.get());
         return;
     }
 
     // Otherwise, notify the chrome of the new full screen element.
-    page()->chrome()->client()->enterFullScreenForElement(newTop);
+    page()->chrome().client()->enterFullScreenForElement(newTop);
 }
 
 bool Document::webkitFullscreenEnabled() const
 {
     // 4. The fullscreenEnabled attribute must return true if the context object and all ancestor
     // browsing context's documents have their fullscreen enabled flag set, or false otherwise.
 
     // Top-level browsing contexts are implied to have their allowFullScreen attribute set.
     return isAttributeOnAllOwners(allowfullscreenAttr, webkitallowfullscreenAttr, ownerElement());
 }
@@ skipping 357 matching lines @@
         m_touchEventTargets = adoptPtr(new TouchEventTargetSet);
     m_touchEventTargets->add(handler);
     if (Document* parent = parentDocument()) {
         parent->didAddTouchEventHandler(this);
         return;
     }
     if (Page* page = this->page()) {
         if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
             scrollingCoordinator->touchEventTargetRectsDidChange(this);
         if (m_touchEventTargets->size() == 1)
-            page->chrome()->client()->needTouchEvents(true);
+            page->chrome().client()->needTouchEvents(true);
     }
 }
 
 void Document::didRemoveTouchEventHandler(Node* handler)
 {
     if (!m_touchEventTargets.get())
         return;
     ASSERT(m_touchEventTargets->contains(handler));
     m_touchEventTargets->remove(handler);
     if (Document* parent = parentDocument()) {
         parent->didRemoveTouchEventHandler(this);
         return;
     }
 
     Page* page = this->page();
     if (!page)
         return;
     if (ScrollingCoordinator* scrollingCoordinator = page->scrollingCoordinator())
         scrollingCoordinator->touchEventTargetRectsDidChange(this);
     if (m_touchEventTargets->size())
         return;
     for (const Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext()) {
         if (frame->document() && frame->document()->hasTouchEventHandlers())
             return;
     }
-    page->chrome()->client()->needTouchEvents(false);
+    page->chrome().client()->needTouchEvents(false);
 }
 
 void Document::didRemoveEventTargetNode(Node* handler)
 {
     if (m_touchEventTargets) {
         m_touchEventTargets->removeAll(handler);
         if ((handler == this || m_touchEventTargets->isEmpty()) && parentDocument())
             parentDocument()->didRemoveEventTargetNode(this);
     }
 }
@@ skipping 365 matching lines @@
 
 void Document::didAssociateFormControlsTimerFired(Timer<Document>* timer)
 {
     ASSERT_UNUSED(timer, timer == &m_didAssociateFormControlsTimer);
     if (!frame() || !frame()->page())
         return;
 
     Vector<RefPtr<Element> > associatedFormControls;
     copyToVector(m_associatedFormControls, associatedFormControls);
 
-    frame()->page()->chrome()->client()->didAssociateFormControls(associatedFormControls);
+    frame()->page()->chrome().client()->didAssociateFormControls(associatedFormControls);
     m_associatedFormControls.clear();
 }
 
 } // namespace WebCore