implement device::clear until we can remove callers in chrome skia/ext

src/core/SkDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDevice.h"
 #include "SkDeviceProperties.h"
 #include "SkDraw.h"
 #include "SkMetaData.h"
 #include "SkPatchUtils.h"
+#include "SkRasterClip.h"
 #include "SkShader.h"
 #include "SkTextBlob.h"
 
 SkBaseDevice::SkBaseDevice()
     : fLeakyProperties(SkNEW_ARGS(SkDeviceProperties, (SkDeviceProperties::kLegacyLCD_InitType)))
 #ifdef SK_DEBUG
     , fAttachedToCanvas(false)
 #endif
 {
     fOrigin.setZero();
@@ skipping 62 matching lines @@
                                                                   kGeneral_Usage,
                                                                   geo));
 }
 
 SkSurface* SkBaseDevice::newSurface(const SkImageInfo&, const SkSurfaceProps&) { return NULL; }
 
 const void* SkBaseDevice::peekPixels(SkImageInfo*, size_t*) { return NULL; }
 
 // DEPRECATED : remove when chrome subclass have been updated to not override clear()
 void SkBaseDevice::clear(SkColor color) {
-    SkFAIL("SkDevice::clear() should not be called");
+    SkPaint paint;
+    paint.setColor(color);
+    paint.setXfermodeMode(SkXfermode::kSrc_Mode);
+
+    SkMatrix matrix;
+    matrix.reset();
+
+    SkRasterClip rc(SkIRect::MakeWH(this->width(), this->height()));
+
+    SkDraw draw;
+    sk_bzero(&draw, sizeof(draw));
+
+    draw.fBitmap = &this->accessBitmap(true);
+    draw.fMatrix = &matrix;
+    draw.fClip   = &rc.forceGetBW();
+    draw.fRC     = &rc;
+    draw.fDevice = this;
+    this->drawPaint(draw, paint);
 }
 
 void SkBaseDevice::drawDRRect(const SkDraw& draw, const SkRRect& outer,
                               const SkRRect& inner, const SkPaint& paint) {
     SkPath path;
     path.addRRect(outer);
     path.addRRect(inner);
     path.setFillType(SkPath::kEvenOdd_FillType);
 
     const SkMatrix* preMatrix = NULL;
@@ skipping 121 matching lines @@
     if (kUnknown_SkPixelGeometry == fLeakyProperties->pixelGeometry()
         || this->onShouldDisableLCD(paint)) {
 
         flags &= ~SkPaint::kLCDRenderText_Flag;
         flags |= SkPaint::kGenA8FromLCD_Flag;
     }
 
     return flags;
 }