Revert 78666 - Cleanup NativeMetafile (win) interface and EMF class.

- Rename CreateDc to Init() and remove unused argument (all non-test calls were CreateDc(NULL, NULL).  [This matches cross platform interface.]
- Remove CreateFileBackedDc from the NativeMetafile interface and make InitToFile() in the EMF class.
- Remove CreateFromFile from the NativeMetafile interface and make it InitFromFile() in the EMF class.
- Move the CloseEmf method into the destructor, making the Emf class a use once class (matches actual use).

BUG=NONE
TEST=NONE

Review URL: http://codereview.chromium.org/6695013

TBR=vandebo@chromium.org
Review URL: http://codereview.chromium.org/6712030

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@78669 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 23 insertions, 0 deletions

diff --git a/printing/native_metafile.h b/printing/native_metafile.h
index 08b3277..a076b32 100644
--- a/printing/native_metafile.h
+++ b/printing/native_metafile.h
@@ -101,6 +101,29 @@ class NativeMetafile {
   virtual gfx::NativeDrawingContext context() const = 0;
 
 #if defined(OS_WIN)
+  // Generates a virtual HDC that will record every GDI commands and compile it
+  // in a EMF data stream.
+  // hdc is used to setup the default DPI and color settings. hdc is optional.
+  // rect specifies the dimensions (in .01-millimeter units) of the EMF. rect is
+  // optional.
+  virtual bool CreateDc(gfx::NativeDrawingContext sibling,
+                        const RECT* rect) = 0;
+
+  // Similar to the above method but the metafile is backed by a file.
+  virtual bool CreateFileBackedDc(gfx::NativeDrawingContext sibling,
+                                  const RECT* rect,
+                                  const FilePath& path) = 0;
+
+  // TODO(maruel): CreateFromFile(). If ever used. Maybe users would like to
+  // have the ability to save web pages to an EMF file? Afterward, it is easy to
+  // convert to PDF or PS.
+  // Load a metafile fromdisk.
+  virtual bool CreateFromFile(const FilePath& metafile_path) = 0;
+
+  // Closes the HDC created by CreateDc() and generates the compiled EMF
+  // data.
+  virtual void CloseEmf() = 0;
+
   // "Plays" the EMF buffer in a HDC. It is the same effect as calling the
   // original GDI function that were called when recording the EMF. |rect| is in
   // "logical units" and is optional. If |rect| is NULL, the natural EMF bounds