diff --git a/lib/render_widget_host_view_qt.cpp b/lib/render_widget_host_view_qt.cpp
index aa644a27fd1d8adcaceefaca09704746d34f965a..f6f15e0ac46d8a098338030f5232b2986e8d99c6 100644
--- a/lib/render_widget_host_view_qt.cpp
+++ b/lib/render_widget_host_view_qt.cpp
@@ -234,19 +234,12 @@ void RenderWidgetHostViewQt::SetBackground(const SkBitmap& background)
 // Return value indicates whether the mouse is locked successfully or not.
 bool RenderWidgetHostViewQt::LockMouse()
 {
-    QT_NOT_YET_IMPLEMENTED
+    QT_NOT_USED
     return false;
 }
 void RenderWidgetHostViewQt::UnlockMouse()
 {
-    QT_NOT_YET_IMPLEMENTED
-}
-
-// Returns true if the mouse pointer is currently locked.
-bool RenderWidgetHostViewQt::IsMouseLocked()
-{
-    QT_NOT_YET_IMPLEMENTED
-    return false;
+    QT_NOT_USED
 }
 
 // FIXME: remove TOOLKIT_GTK related things.
@@ -295,8 +288,7 @@ void RenderWidgetHostViewQt::UpdateCursor(const WebCursor&)
 
 void RenderWidgetHostViewQt::SetIsLoading(bool)
 {
-    QT_NOT_YET_IMPLEMENTED
-    // Give visual feedback for loading process.
+    // We use WebContentsDelegateQt::LoadingStateChanged to notify about loading state.
 }
 
 void RenderWidgetHostViewQt::TextInputTypeChanged(ui::TextInputType, bool)
@@ -439,7 +431,8 @@ void RenderWidgetHostViewQt::SetScrollOffsetPinning(bool, bool) { }
 
 void RenderWidgetHostViewQt::OnAccessibilityNotifications(const std::vector<AccessibilityHostMsg_NotificationParams>&)
 {
-    QT_NOT_YET_IMPLEMENTED
+    // We are not using accessibility features at this point.
+    QT_NOT_USED
 }
 
 void RenderWidgetHostViewQt::Paint(const gfx::Rect& damage_rect)
diff --git a/lib/render_widget_host_view_qt.h b/lib/render_widget_host_view_qt.h
index 1cccd24582b89f00003b64eba439f5f82ab15b32..4b1a3c66e2f9d7c200fdd754372b073575cd50c5 100644
--- a/lib/render_widget_host_view_qt.h
+++ b/lib/render_widget_host_view_qt.h
@@ -94,7 +94,6 @@ public:
     virtual void SetBackground(const SkBitmap& background);
     virtual bool LockMouse();
     virtual void UnlockMouse();
-    virtual bool IsMouseLocked();
 #if defined(TOOLKIT_GTK)
     virtual GdkEventButton* GetLastMouseDown();
     virtual gfx::NativeView BuildInputMethodsGtkMenu();
diff --git a/lib/web_contents_view_qt.h b/lib/web_contents_view_qt.h
index d12b9df756dbebce5dd87f79d90063ddc5cf1a16..456329201bbe1ef360640e63689112c1dec49fc5 100644
--- a/lib/web_contents_view_qt.h
+++ b/lib/web_contents_view_qt.h
@@ -87,11 +87,11 @@ public:
 
     virtual void SetOverscrollControllerEnabled(bool enabled) { QT_NOT_YET_IMPLEMENTED }
 
-    virtual gfx::NativeView GetNativeView() const {  QT_NOT_YET_IMPLEMENTED return 0; }
+    virtual gfx::NativeView GetNativeView() const {  QT_NOT_USED return 0; }
 
-    virtual gfx::NativeView GetContentNativeView() const { QT_NOT_YET_IMPLEMENTED return 0; }
+    virtual gfx::NativeView GetContentNativeView() const { QT_NOT_USED return 0; }
 
-    virtual gfx::NativeWindow GetTopLevelNativeWindow() const { QT_NOT_YET_IMPLEMENTED return 0; }
+    virtual gfx::NativeWindow GetTopLevelNativeWindow() const { QT_NOT_USED return 0; }
 
     virtual void GetContainerBounds(gfx::Rect* out) const;