Don't let rounding prematurely influence document size when printing

third_party/WebKit/public/web/WebLocalFrame.h

 // Copyright 2014 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.
 
 #ifndef WebLocalFrame_h
 #define WebLocalFrame_h
 
 #include "WebFrame.h"
 #include "WebFrameLoadType.h"
 
 namespace blink {
 
 class WebAutofillClient;
 class WebContentSettingsClient;
 class WebDevToolsAgent;
 class WebDevToolsAgentClient;
 class WebFrameClient;
 class WebNode;
 class WebScriptExecutionCallback;
 class WebSuspendableTask;
 class WebWidget;
 enum class WebAppBannerPromptReply;
 enum class WebCachePolicy;
 enum class WebSandboxFlags;
 enum class WebTreeScopeType;
+struct WebDoubleSize;
 struct WebPrintPresetOptions;
 
 // Interface for interacting with in process frames. This contains methods that
 // require interacting with a frame's document.
 // FIXME: Move lots of methods from WebFrame in here.
 class WebLocalFrame : public WebFrame {
 public:
     // Creates a WebFrame. Delete this WebFrame by calling WebFrame::close().
     // It is valid to pass a null client pointer.
     BLINK_EXPORT static WebLocalFrame* create(WebTreeScopeType, WebFrameClient*, WebFrame* opener = nullptr);
@@ skipping 115 matching lines @@
     virtual bool isPageBoxVisible(int pageIndex) = 0;
 
     // Returns true if the page style has custom size information.
     virtual bool hasCustomPageSizeStyle(int pageIndex) = 0;
 
     // Returns the preferred page size and margins in pixels, assuming 96
     // pixels per inch. pageSize, marginTop, marginRight, marginBottom,
     // marginLeft must be initialized to the default values that are used if
     // auto is specified.
     virtual void pageSizeAndMarginsInPixels(int pageIndex,
-        WebSize& pageSize,
+        WebDoubleSize& pageSize,
         int& marginTop,
         int& marginRight,
         int& marginBottom,
         int& marginLeft) = 0;
 
     // Returns the value for a page property that is only defined when printing.
     // printBegin must have been called before this method.
     virtual WebString pageProperty(const WebString& propertyName, int pageIndex) = 0;
 
 
@@ skipping 256 matching lines @@
     // to call these on a WebLocalFrame.
     bool isWebLocalFrame() const override = 0;
     WebLocalFrame* toWebLocalFrame() override = 0;
     bool isWebRemoteFrame() const override = 0;
     WebRemoteFrame* toWebRemoteFrame() override = 0;
 };
 
 } // namespace blink
 
 #endif // WebLocalFrame_h