gfx: Make conversions from Size to SizeF be explicit.

chrome/renderer/chrome_render_frame_observer.cc

 // Copyright 2013 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/renderer/chrome_render_frame_observer.h"
 
 #include <limits>
 #include <string>
 #include <vector>
 
@@ skipping 13 matching lines @@
 #include "third_party/WebKit/public/platform/modules/app_banner/WebAppBannerPromptReply.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebNode.h"
 #include "third_party/WebKit/public/web/WebSecurityPolicy.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/gfx/codec/jpeg_codec.h"
+#include "ui/gfx/geometry/size_f.h"
 #include "url/gurl.h"
 
 using blink::WebDataSource;
 using blink::WebElement;
 using blink::WebNode;
 using content::SSLStatus;
 
 namespace {
 
 // If the source image is null or occupies less area than
 // |thumbnail_min_area_pixels|, we return the image unmodified.  Otherwise, we
 // scale down the image so that the width and height do not exceed
 // |thumbnail_max_size_pixels|, preserving the original aspect ratio.
 SkBitmap Downscale(const blink::WebImage& image,
                    int thumbnail_min_area_pixels,
                    const gfx::Size& thumbnail_max_size_pixels) {
   if (image.isNull())
     return SkBitmap();
 
   gfx::Size image_size = image.size();
 
   if (image_size.GetArea() < thumbnail_min_area_pixels)
     return image.getSkBitmap();
 
   if (image_size.width() <= thumbnail_max_size_pixels.width() &&
       image_size.height() <= thumbnail_max_size_pixels.height())
     return image.getSkBitmap();
 
-  gfx::SizeF scaled_size = image_size;
+  gfx::SizeF scaled_size = gfx::SizeF(image_size);
 
   if (scaled_size.width() > thumbnail_max_size_pixels.width()) {
     scaled_size.Scale(thumbnail_max_size_pixels.width() / scaled_size.width());
   }
 
   if (scaled_size.height() > thumbnail_max_size_pixels.height()) {
     scaled_size.Scale(
         thumbnail_max_size_pixels.height() / scaled_size.height());
   }
 
@@ skipping 158 matching lines @@
 
   Send(new ChromeViewHostMsg_AppBannerPromptReply(
       routing_id(), request_id, reply, referrer));
 }
 
 void ChromeRenderFrameObserver::OnAppBannerDebugMessageRequest(
     const std::string& message) {
   render_frame()->GetWebFrame()->addMessageToConsole(blink::WebConsoleMessage(
       blink::WebConsoleMessage::LevelDebug, base::UTF8ToUTF16(message)));
 }