vs2015: avoid int->float warning in printing/emf_win.cc

printing/emf_win.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.
 
 #include "printing/emf_win.h"
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 525 matching lines @@
   DCHECK(hdc);
   skia::InitializeDC(hdc);
 
   // Params are ignored.
   result->StartPage(page_bounds.size(), page_bounds, 1);
 
   ::ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
   XFORM xform = {
     float(page_bounds.width()) / bitmap_rect.width(), 0,
     0, float(page_bounds.height()) / bitmap_rect.height(),
-    page_bounds.x(),
-    page_bounds.y(),
+    static_cast<float>(page_bounds.x()),
+    static_cast<float>(page_bounds.y()),
   };
   ::SetWorldTransform(hdc, &xform);
   ::BitBlt(hdc, 0, 0, bitmap_rect.width(), bitmap_rect.height(),
            bitmap.context(), bitmap_rect.x(), bitmap_rect.y(), SRCCOPY);
 
   result->FinishPage();
   result->FinishDocument();
 
   return result.Pass();
 }
 
 scoped_ptr<Emf> Emf::RasterizeAlphaBlend() const {
   gfx::Rect page_bounds = GetPageBounds(1);
   if (page_bounds.size().GetArea() <= 0) {
     NOTREACHED() << "Metafile is empty";
     page_bounds = gfx::Rect(1, 1);
   }
 
   RasterBitmap bitmap(page_bounds.size());
 
   // Map metafile page_bounds.x(), page_bounds.y() to bitmap 0, 0.
-  XFORM xform = { 1, 0, 0, 1, -page_bounds.x(), -page_bounds.y()};
+  XFORM xform = {1,
+                 0,
+                 0,
+                 1,
+                 static_cast<float>(-page_bounds.x()),
+                 static_cast<float>(-page_bounds.y())};
   ::SetWorldTransform(bitmap.context(), &xform);
 
   scoped_ptr<Emf> result(new Emf);
   result->Init();
   HDC hdc = result->context();
   DCHECK(hdc);
   skia::InitializeDC(hdc);
 
   HDC bitmap_dc = bitmap.context();
   RECT rect = page_bounds.ToRECT();
   ::EnumEnhMetaFile(hdc, emf(), &RasterizeAlphaBlendProc, &bitmap_dc, &rect);
 
   result->FinishDocument();
 
   return result.Pass();
 }
 
 
 }  // namespace printing