Limit constrained windows to the size of the parent view.

chrome/browser/ui/views/frame/browser_view_layout.cc

 // Copyright 2012 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/ui/views/frame/browser_view_layout.h"
 
 #include "base/observer_list.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
@@ skipping 81 matching lines @@
   // Center horizontally over the content area, with the top overlapping the
   // browser chrome.
   virtual gfx::Point GetDialogPosition(const gfx::Size& size) OVERRIDE {
     int top_y = browser_view_layout_->web_contents_modal_dialog_top_y_;
     gfx::Rect content_area =
         browser_view_layout_->browser_view_->GetClientAreaBounds();
     int middle_x = content_area.x() + content_area.width() / 2;
     return gfx::Point(middle_x - size.width() / 2, top_y);
   }
 
+  virtual gfx::Size GetMaximumDialogSize() OVERRIDE {
+    gfx::Rect content_area =
+        browser_view_layout_->contents_container_->ConvertRectToWidget(
+            browser_view_layout_->contents_container_->GetLocalBounds());
+
+    gfx::Size max_dialog_size = content_area.size();
+    // Adjust for difference in alignment between the dialog top and the top of
+    // the content area.
+    int height_offset = content_area.y() -
+        browser_view_layout_->web_contents_modal_dialog_top_y_;
+    max_dialog_size.Enlarge(0, height_offset);
+    return max_dialog_size;
+  }
+
   // Add/remove observer.
   virtual void AddObserver(
       WebContentsModalDialogHostObserver* observer) OVERRIDE {
     observer_list_.AddObserver(observer);
   }
   virtual void RemoveObserver(
       WebContentsModalDialogHostObserver* observer) OVERRIDE {
     observer_list_.RemoveObserver(observer);
   }
 
@@ skipping 450 matching lines @@
   return bottom;
 }
 
 bool BrowserViewLayout::InfobarVisible() const {
   // Cast to a views::View to access GetPreferredSize().
   views::View* infobar_container = infobar_container_;
   // NOTE: Can't check if the size IsEmpty() since it's always 0-width.
   return browser_->SupportsWindowFeature(Browser::FEATURE_INFOBAR) &&
       (infobar_container->GetPreferredSize().height() != 0);
 }