Hook up the resize rect for Mac and enable its use in the renderer (mac-only)...

chrome/browser/cocoa/tab_contents_controller.mm

 // Copyright (c) 2009 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/cocoa/tab_contents_controller.h"
 
 #import "base/sys_string_conversions.h"
 #import "chrome/app/chrome_dll_resource.h"
 #import "chrome/browser/command_updater.h"
 #import "chrome/browser/location_bar.h"
@@ skipping 184 matching lines @@
   }
 }
 
 - (void)setStarredState:(BOOL)isStarred {
   NSString* starImageName = kStarImageName;
   if (isStarred)
     starImageName = kStarredImageName;
   [starButton_ setImage:[NSImage imageNamed:starImageName]];
 }
 
+// Return the rect, in WebKit coordinates (flipped), of the window's grow box
+// in the coordinate system of the content area of this tab.
+// |windowGrowBox| needs to be in the window's coordinate system.
+- (NSRect)growBoxFromWindowGrowBox:(NSRect)windowGrowBox {
+  NSRect localGrowBox = NSMakeRect(0, 0, 0, 0);
+  NSView* contentView = contents_->GetNativeView();
+  if (contentView) {
+    localGrowBox = windowGrowBox;
+    // The scrollbar assumes that the resizer goes all the way down to the
+    // bottom corner, so we ignore any y offset to the rect itself and use the
+    // entire bottom corner.
+    localGrowBox.origin.y = 0;
+    // Convert to view coordinates from window coordinates.
+    localGrowBox = [contentView convertRect:localGrowBox fromView:nil];
+    // Flip the rect in view coordinates
+    localGrowBox.origin.y = 
+        [contentView frame].size.height - localGrowBox.origin.y - 
+            localGrowBox.size.height;
+  }
+  return localGrowBox;
+}
+
 @end
 
 //--------------------------------------------------------------------------
 
 TabContentsCommandObserver::TabContentsCommandObserver(
     TabContentsController* controller, CommandUpdater* commands)
         : controller_(controller), commands_(commands) {
   DCHECK(controller_ && commands);
   // Register for notifications about state changes for the toolbar buttons
   commands_->AddCommandObserver(IDC_BACK, this);
@@ skipping 22 matching lines @@
 
 std::wstring LocationBarBridge::GetInputString() const {
   return base::SysNSStringToWide([controller_ locationBarString]);
 }
 
 void LocationBarBridge::FocusLocation() {
   [controller_ focusLocationBar];
 }