Re-reland Propagate OnNativeWidgetMove to delegate/observers, etc.

chrome/browser/ui/views/frame/browser_view.h

Index: chrome/browser/ui/views/frame/browser_view.h
diff --git a/chrome/browser/ui/views/frame/browser_view.h b/chrome/browser/ui/views/frame/browser_view.h
index 743d81e01875cf0bbdca62905d58db931bd92a23..a8b574a4e73e75353fdc6b4fbccea20a9a2fe323 100644
--- a/chrome/browser/ui/views/frame/browser_view.h
+++ b/chrome/browser/ui/views/frame/browser_view.h
@@ -41,7 +41,6 @@
 class BookmarkBarView;
 class Browser;
 class BrowserViewLayout;
-class BrowserWindowMoveObserver;
 class ContentsContainer;
 class DownloadShelfView;
 class Extension;
@@ -210,10 +209,6 @@ class BrowserView : public BrowserWindow,
   // when a new browser window is created.
   void RestoreFocus();
 
-  void set_move_observer(BrowserWindowMoveObserver* observer) {
-    move_observer_ = observer;
-  }
-
 #if defined(USE_ASH)
   LauncherUpdater* icon_updater() const { return icon_updater_.get(); }
 #endif
@@ -684,8 +679,6 @@ class BrowserView : public BrowserWindow,
 
   PendingFullscreenRequest fullscreen_request_;
 
-  BrowserWindowMoveObserver* move_observer_;
-
   gfx::ScopedSysColorChangeListener color_change_listener_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);