Moving 4 SkImageFilter derived classes from blink to skia

src/effects/SkFloodImageFilter.cpp

+/*
+ * Copyright 2013 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkFloodImageFilter.h"
+#include "SkBitmap.h"
+#include "SkCanvas.h"
+#include "SkDevice.h"
+#include "SkFlattenableBuffers.h"
+#include "SkMatrix.h"
+#include "SkPaint.h"
+
+SkFloodImageFilter::SkFloodImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) {
+    fColor = buffer.readColor();
+}
+
+void SkFloodImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const {
+    this->INHERITED::flatten(buffer);
+    buffer.writeColor(fColor);
+}
+
+bool SkFloodImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src, const SkMatrix& ctm,
+                                       SkBitmap* result, SkIPoint* offset) {
+    if (!src.width() || !src.height()) {
+        return false;
+    }
+
+    SkIRect bounds;
+    src.getBounds(&bounds);
+    if (!applyCropRect(&bounds, ctm)) {
+        return false;
+    }
+
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
+    SkCanvas canvas(device.get());
+    SkPaint paint;
+    paint.setColor(fColor);
+    canvas.drawRect(SkRect::MakeWH(SkIntToScalar(src.width()),
+                                   SkIntToScalar(src.height())), paint);
+    *result = device->accessBitmap(false);
+    offset->fX += bounds.left();
+    offset->fY += bounds.top();
+    return true;
+}