Handle resize corner layout entirely in the platform BrowserWindow*/BrowserView* code...

chrome/browser/ui/views/tab_contents/tab_contents_container.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/views/tab_contents/tab_contents_container.h"
 
+#include "chrome/browser/renderer_host/render_view_host.h"
+#include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/tab_contents/interstitial_page.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/view_ids.h"
 #include "chrome/browser/views/tab_contents/native_tab_contents_container.h"
 #include "chrome/common/notification_service.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsContainer, public:
 
 TabContentsContainer::TabContentsContainer()
     : native_container_(NULL),
-      tab_contents_(NULL) {
+      tab_contents_(NULL),
+      reserved_area_delegate_(NULL) {
   SetID(VIEW_ID_TAB_CONTAINER);
 }
 
 TabContentsContainer::~TabContentsContainer() {
   if (tab_contents_)
     RemoveObservers();
 }
 
 void TabContentsContainer::ChangeTabContents(TabContents* contents) {
   if (tab_contents_) {
     native_container_->DetachContents(tab_contents_);
     tab_contents_->WasHidden();
     RemoveObservers();
   }
+  TabContents* old_contents = tab_contents_;
   tab_contents_ = contents;
   // When detaching the last tab of the browser ChangeTabContents is invoked
   // with NULL. Don't attempt to do anything in that case.
   if (tab_contents_) {
+    RenderWidgetHostViewChanged(
+        old_contents ? old_contents->GetRenderWidgetHostView() : NULL,
+        tab_contents_->GetRenderWidgetHostView());
     native_container_->AttachContents(tab_contents_);
     AddObservers();
   }
 }
 
 void TabContentsContainer::TabContentsFocused(TabContents* tab_contents) {
   native_container_->TabContentsFocused(tab_contents);
 }
 
 void TabContentsContainer::SetFastResize(bool fast_resize) {
@@ skipping 16 matching lines @@
   } else {
     NOTREACHED();
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsContainer, View overrides:
 
 void TabContentsContainer::Layout() {
   if (native_container_) {
+    if (reserved_area_delegate_)
+      reserved_area_delegate_->UpdateReservedContentsRect(this);
     native_container_->GetView()->SetBounds(0, 0, width(), height());
     native_container_->GetView()->Layout();
   }
 }
 
 AccessibilityTypes::Role TabContentsContainer::GetAccessibleRole() {
   return AccessibilityTypes::ROLE_WINDOW;
 }
 
 void TabContentsContainer::ViewHierarchyChanged(bool is_add,
@@ skipping 20 matching lines @@
                  NotificationType::TAB_CONTENTS_DESTROYED,
                  Source<TabContents>(tab_contents_));
 }
 
 void TabContentsContainer::RemoveObservers() {
   registrar_.RemoveAll();
 }
 
 void TabContentsContainer::RenderViewHostChanged(RenderViewHost* old_host,
                                                  RenderViewHost* new_host) {
+  if (new_host) {
+    RenderWidgetHostViewChanged(
+        old_host ? old_host->view() : NULL, new_host->view());
+  }
   native_container_->RenderViewHostChanged(old_host, new_host);
 }
 
 void TabContentsContainer::TabContentsDestroyed(TabContents* contents) {
   // Sometimes, a TabContents is destroyed before we know about it. This allows
   // us to clean up our state in case this happens.
   DCHECK(contents == tab_contents_);
   ChangeTabContents(NULL);
 }
+
+void TabContentsContainer::RenderWidgetHostViewChanged(
+    RenderWidgetHostView* old_view, RenderWidgetHostView* new_view) {
+  // Carry over the reserved rect, if possible.
+  if (old_view && new_view) {
+    new_view->set_reserved_contents_rect(old_view->reserved_contents_rect());
+  } else {
+    if (reserved_area_delegate_)
+      reserved_area_delegate_->UpdateReservedContentsRect(this);
+  }
+}