Fix print preview clipping issues due to scaling.

printing/emf_win.cc

Index: printing/emf_win.cc
===================================================================
--- printing/emf_win.cc	(revision 83537)
+++ printing/emf_win.cc	(working copy)
@@ -404,9 +404,9 @@
 }
 
 skia::PlatformDevice* Emf::StartPageForVectorCanvas(
-    const gfx::Size& page_size, const gfx::Point& content_origin,
+    const gfx::Size& page_size, const gfx::Rect& content_area,
     const float& scale_factor) {
-  if (!StartPage(page_size, content_origin, scale_factor))
+  if (!StartPage(page_size, content_area, scale_factor))
     return NULL;
 
   return skia::VectorPlatformDeviceEmfFactory::CreateDevice(page_size.width(),
@@ -415,7 +415,7 @@
 }
 
 bool Emf::StartPage(const gfx::Size& /*page_size*/,
-                    const gfx::Point& /*content_origin*/,
+                    const gfx::Rect& /*content_area*/,
                     const float& /*scale_factor*/) {
   DCHECK(hdc_);
   if (!hdc_)