Use a direct include of strings headers in ui/, part 2.

ui/gfx/transform.cc

 // Copyright (c) 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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 
 #include "ui/gfx/transform.h"
 
 #include <cmath>
 
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/point3_f.h"
-#include "ui/gfx/vector3d_f.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/safe_integer_conversions.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/gfx/transform_util.h"
+#include "ui/gfx/vector3d_f.h"
 
 namespace gfx {
 
 namespace {
 
 // Taken from SkMatrix44.
 const double kTooSmallForDeterminant = 1e-8;
 
 double TanDegrees(double degrees) {
   double radians = degrees * M_PI / 180;
@@ skipping 404 matching lines @@
       matrix_.getDouble(2, 1),
       matrix_.getDouble(2, 2),
       matrix_.getDouble(2, 3),
       matrix_.getDouble(3, 0),
       matrix_.getDouble(3, 1),
       matrix_.getDouble(3, 2),
       matrix_.getDouble(3, 3));
 }
 
 }  // namespace gfx