get webframe_impl.cc to compile on linux

base/gfx/rect.cc

 // Copyright (c) 2006-2008 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 "base/gfx/rect.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_MACOSX)
 #include <CoreGraphics/CGGeometry.h>
+#elif defined(OS_LINUX)
+#include <gdk/gdk.h>
 #endif
 
 #include "base/logging.h"
 
 namespace {
 
 void AdjustAlongAxis(int dst_origin, int dst_size, int* origin, int* size) {
   if (*origin < dst_origin) {
     *origin = dst_origin;
     *size = std::min(dst_size, *size);
@@ skipping 40 matching lines @@
   set_width(r.size.width);
   set_height(r.size.height);
 }
 
 Rect& Rect::operator=(const CGRect& r) {
   origin_.SetPoint(r.origin.x, r.origin.y);
   set_width(r.size.width);
   set_height(r.size.height);
   return *this;
 }
+#elif defined(OS_LINUX)
+Rect::Rect(const GdkRectangle& r)
+    : origin_(r.x, r.y) {
+  set_width(r.width);
+  set_height(r.height);
+}
+
+Rect& Rect::operator=(const GdkRectangle& r) {
+  origin_.SetPoint(r.x, r.y);
+  set_width(r.width);
+  set_height(r.height);
+  return *this;
+}
 #endif
 
 void Rect::set_width(int width) {
   if (width < 0) {
     NOTREACHED();
     width = 0;
   }
 
   size_.set_width(width);
 }
@@ skipping 128 matching lines @@
   AdjustAlongAxis(rect.y(), rect.height(), &new_y, &new_height);
   return Rect(new_x, new_y, new_width, new_height);
 }
 
 Point Rect::CenterPoint() const {
   return Point(x() + (width() + 1) / 2, y() + (height() + 1) / 2);
 }
 
 }  // namespace gfx