Move core pieces of browser\renderer_host to src\content.

chrome/browser/renderer_host/backing_store_skia.cc

-// Copyright (c) 2011 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 "chrome/browser/renderer_host/backing_store_skia.h"
-
-#include "chrome/browser/renderer_host/render_process_host.h"
-#include "skia/ext/platform_canvas.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/canvas_skia.h"
-#include "ui/gfx/rect.h"
-
-// Assume that somewhere along the line, someone will do width * height * 4
-// with signed numbers. If the maximum value is 2**31, then 2**31 / 4 =
-// 2**29 and floor(sqrt(2**29)) = 23170.
-
-// Max height and width for layers
-static const int kMaxVideoLayerSize = 23170;
-
-BackingStoreSkia::BackingStoreSkia(RenderWidgetHost* widget,
-                                   const gfx::Size& size)
-    : BackingStore(widget, size) {
-  bitmap_.setConfig(SkBitmap::kARGB_8888_Config, size.width(), size.height());
-  bitmap_.allocPixels();
-  canvas_.reset(new SkCanvas(bitmap_));
-}
-
-BackingStoreSkia::~BackingStoreSkia() {
-}
-
-void BackingStoreSkia::SkiaShowRect(const gfx::Point& point,
-                                    gfx::Canvas* canvas) {
-  canvas->AsCanvasSkia()->drawBitmap(bitmap_,
-      SkIntToScalar(point.x()), SkIntToScalar(point.y()));
-}
-
-size_t BackingStoreSkia::MemorySize() {
-  // NOTE: The computation may be different when the canvas is a subrectangle of
-  // a larger bitmap.
-  return size().GetArea() * 4;
-}
-
-void BackingStoreSkia::PaintToBackingStore(
-    RenderProcessHost* process,
-    TransportDIB::Id bitmap,
-    const gfx::Rect& bitmap_rect,
-    const std::vector<gfx::Rect>& copy_rects) {
-  if (bitmap_rect.IsEmpty())
-    return;
-
-  const int width = bitmap_rect.width();
-  const int height = bitmap_rect.height();
-
-  if (width <= 0 || width > kMaxVideoLayerSize ||
-      height <= 0 || height > kMaxVideoLayerSize)
-    return;
-
-  TransportDIB* dib = process->GetTransportDIB(bitmap);
-  if (!dib)
-    return;
-
-  scoped_ptr<skia::PlatformCanvas> p_canvas(
-      dib->GetPlatformCanvas(width, height));
-  for (size_t i = 0; i < copy_rects.size(); i++) {
-    const gfx::Rect& copy_rect = copy_rects[i];
-    int x = copy_rect.x() - bitmap_rect.x();
-    int y = copy_rect.y() - bitmap_rect.y();
-    int w = copy_rect.width();
-    int h = copy_rect.height();
-    SkIRect srcrect = SkIRect::MakeXYWH(x, y, w, h);
-    SkRect dstrect = SkRect::MakeXYWH(
-        SkIntToScalar(copy_rect.x()), SkIntToScalar(copy_rect.y()),
-        SkIntToScalar(w), SkIntToScalar(h));
-    SkBitmap b = p_canvas->getTopPlatformDevice().accessBitmap(false);
-    canvas_.get()->drawBitmapRect(b, &srcrect, dstrect);
-  }
-}
-
-void BackingStoreSkia::ScrollBackingStore(int dx, int dy,
-                                          const gfx::Rect& clip_rect,
-                                          const gfx::Size& view_size) {
-  int x = std::min(clip_rect.x(), clip_rect.x() - dx);
-  int y = std::min(clip_rect.y(), clip_rect.y() - dy);
-  int w = clip_rect.width() + abs(dx);
-  int h = clip_rect.height() + abs(dy);
-  SkIRect rect = SkIRect::MakeXYWH(x, y, w, h);
-  bitmap_.scrollRect(&rect, dx, dy);
-}
-
-bool BackingStoreSkia::CopyFromBackingStore(const gfx::Rect& rect,
-                                            skia::PlatformCanvas* output) {
-  const int width = std::min(size().width(), rect.width());
-  const int height = std::min(size().height(), rect.height());
-  if (!output->initialize(width, height, true))
-    return false;
-
-  SkBitmap bitmap = output->getTopPlatformDevice().accessBitmap(true);
-  SkIRect skrect = SkIRect::MakeXYWH(rect.x(), rect.y(), width, height);
-  SkBitmap b;
-  if (!canvas_->readPixels(skrect, &b))
-    return false;
-  output->writePixels(b, rect.x(), rect.y());
-  return true;
-}