ozone: Support building without cairo

ui/gfx/blit.cc

 // Copyright (c) 2012 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.
 
 #include "ui/gfx/blit.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/vector2d.h"
 
+#if defined(USE_CAIRO)
 #if defined(OS_OPENBSD)
 #include <cairo.h>
 #elif defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 #include <cairo/cairo.h>
 #endif
+#endif
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_cftyperef.h"
 #endif
 
 namespace gfx {
 
 namespace {
 
 // Returns true if the given canvas has any part of itself clipped out or
@@ skipping 40 matching lines @@
   CGFloat delta_y = flipped ? CGBitmapContextGetHeight(src_context) -
                               transform.ty
                             : transform.ty;
   src_rect.Offset(transform.tx, delta_y);
 
   base::ScopedCFTypeRef<CGImageRef> src_image(
       CGBitmapContextCreateImage(src_context));
   base::ScopedCFTypeRef<CGImageRef> src_sub_image(
       CGImageCreateWithImageInRect(src_image, src_rect.ToCGRect()));
   CGContextDrawImage(dst_context, dst_rect.ToCGRect(), src_sub_image);
-#elif defined(OS_ANDROID)
-  NOTIMPLEMENTED();
-#else  // Linux, BSD, others
+#elif defined(USE_CAIRO)
   // Only translations in the source context are supported; more complex
   // source context transforms will be ignored.
   cairo_save(dst_context);
   double surface_x = src_origin.x();
   double surface_y = src_origin.y();
   cairo_user_to_device(src_context, &surface_x, &surface_y);
   cairo_set_source_surface(dst_context, cairo_get_target(src_context),
                            dst_rect.x()-surface_x, dst_rect.y()-surface_y);
   cairo_rectangle(dst_context, dst_rect.x(), dst_rect.y(),
                   dst_rect.width(), dst_rect.height());
   cairo_clip(dst_context);
   cairo_paint(dst_context);
   cairo_restore(dst_context);
+#else
+  NOTIMPLEMENTED();
 #endif
 }
 
 void BlitContextToCanvas(SkCanvas *dst_canvas,
                          const Rect& dst_rect,
                          NativeDrawingContext src_context,
                          const Point& src_origin) {
   DCHECK(skia::SupportsPlatformPaint(dst_canvas));
   BlitContextToContext(skia::BeginPlatformPaint(dst_canvas), dst_rect,
                        src_context, src_origin);
@@ skipping 80 matching lines @@
     // Fortunately, memmove already handles this for us.
     for (int y = 0; y < dest_rect.height(); y++) {
       memmove(bitmap.getAddr32(dest_rect.x(), dest_rect.y() + y),
               bitmap.getAddr32(src_rect.x(), src_rect.y() + y),
               row_bytes);
     }
   }
 }
 
 }  // namespace gfx