Remove cast to VectorPlatformDeviceEMF.

Dependencies on PlatformDevice, and its children should be minimized.

Also, added some OVERRIDE tags to touched files.

BUG=None
TEST=None
Review URL: http://codereview.chromium.org/7465104

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@95427 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 11 insertions, 5 deletions

diff --git a/skia/ext/platform_device_win.h b/skia/ext/platform_device_win.h
index 57afa89..f21ca1f 100644
--- a/skia/ext/platform_device_win.h
+++ b/skia/ext/platform_device_win.h
@@ -52,6 +52,11 @@ class SK_API PlatformDevice : public SkDevice {
   // Returns if GDI is allowed to render text to this device.
   virtual bool IsNativeFontRenderingAllowed() { return true; }
 
+  // True if AlphaBlend() was called during a
+  // BeginPlatformPaint()/EndPlatformPaint() pair.
+  // Used by the printing subclasses.  See |VectorPlatformDeviceEmf|.
+  virtual bool AlphaBlendUsed() const { return false; }
+
   // Loads a SkPath into the GDI context. The path can there after be used for
   // clipping or as a stroke. Returns false if the path failed to be loaded.
   static bool LoadPathToDC(HDC context, const SkPath& path);
diff --git a/skia/ext/vector_platform_device_emf_win.h b/skia/ext/vector_platform_device_emf_win.h
index 6044b7c..61283ff 100644
--- a/skia/ext/vector_platform_device_emf_win.h
+++ b/skia/ext/vector_platform_device_emf_win.h
@@ -31,8 +31,10 @@ class VectorPlatformDeviceEmf : public PlatformDevice {
   virtual ~VectorPlatformDeviceEmf();
 
   // PlatformDevice methods
-  virtual PlatformSurface BeginPlatformPaint();
-  virtual void DrawToNativeContext(HDC dc, int x, int y, const RECT* src_rect);
+  virtual PlatformSurface BeginPlatformPaint() OVERRIDE;
+  virtual void DrawToNativeContext(HDC dc, int x, int y,
+                                   const RECT* src_rect) OVERRIDE;
+  virtual bool AlphaBlendUsed() const OVERRIDE { return alpha_blend_used_; }
 
   // SkDevice methods.
   virtual uint32_t getDeviceCapabilities();
@@ -70,15 +72,14 @@ class VectorPlatformDeviceEmf : public PlatformDevice {
                           const SkPaint&) OVERRIDE;
 
   virtual void setMatrixClip(const SkMatrix& transform, const SkRegion& region,
-                             const SkClipStack&);
+                             const SkClipStack&) OVERRIDE;
 
   void LoadClipRegion();
-  bool alpha_blend_used() const { return alpha_blend_used_; }
 
  protected:
   virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config, int width,
                                              int height, bool isOpaque,
-                                             Usage usage);
+                                             Usage usage) OVERRIDE;
 
  private:
   // Applies the SkPaint's painting properties in the current GDI context, if