This change implements a first pass in the effort to remove the dependency of PlatformDevice within Chrome. The Skia library now provides multiple back-ends for the SkDevice class, so PlatformDevice's inheritance of SkDevice, and the assumption of instances of PlatformDevice limits the use of these new back-ends.

A new set of helper functions is provided for the PlatformDevice entry points.  Upon construction of a PlatformDevice, a pointer to the interface is cached in the parent SkDevice's SkMetaData.  The new helper functions forward calls to the interface cached in the metadata.

BUG=NONE
TEST=NONE
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=86625
Reverted:  http://src.chromium.org/viewvc/chrome?view=rev&revision=86625
Review URL: http://codereview.chromium.org/7019013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86823 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 2 deletions

diff --git a/skia/ext/platform_device_linux.h b/skia/ext/platform_device_linux.h
index 718560c..d10d795 100644
--- a/skia/ext/platform_device_linux.h
+++ b/skia/ext/platform_device_linux.h
@@ -6,10 +6,9 @@
 #define SKIA_EXT_PLATFORM_DEVICE_LINUX_H_
 #pragma once
 
+#include "skia/ext/platform_device.h"
 #include "third_party/skia/include/core/SkDevice.h"
 
-typedef struct _cairo cairo_t;
-
 namespace skia {
 
 // Blindly copying the mac hierarchy.
@@ -26,6 +25,12 @@ class PlatformDevice : public SkDevice {
   virtual PlatformSurface BeginPlatformPaint() = 0;
   virtual void EndPlatformPaint();
 
+  virtual void DrawToNativeContext(PlatformSurface surface, int x, int y,
+                                   const PlatformRect* src_rect );
+                                   
+  // Sets the opacity of each pixel in the specified region to be opaque.
+  virtual void MakeOpaque(int x, int y, int width, int height) { }
+
  protected:
   // Forwards |bitmap| to SkDevice's constructor.
   explicit PlatformDevice(const SkBitmap& bitmap);