Linux: server side backing stores

chrome/browser/renderer_host/backing_store_win.cc

 // Copyright (c) 2006-2008 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.h"
 
 #include "base/gfx/gdi_util.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/common/transport_dib.h"
 
@@ skipping 12 matching lines @@
   DCHECK(hdc_);
 
   DeleteDC(hdc_);
 
   if (backing_store_dib_) {
     DeleteObject(backing_store_dib_);
     backing_store_dib_ = NULL;
   }
 }
 
-bool BackingStore::PaintRect(base::ProcessHandle process,
+void BackingStore::PaintRect(base::ProcessHandle process,
                              TransportDIB* bitmap,
                              const gfx::Rect& bitmap_rect) {
   if (!backing_store_dib_) {
     backing_store_dib_ = CreateDIB(hdc_, size_.width(), size_.height(), true,
                                    NULL);
     DCHECK(backing_store_dib_ != NULL);
     original_bitmap_ = SelectObject(hdc_, backing_store_dib_);
   }
 
   // TODO(darin): protect against integer overflow
@@ skipping 11 matching lines @@
                 paint_rect.y(),
                 paint_rect.width(),
                 paint_rect.height(),
                 0, 0,  // source x,y
                 paint_rect.width(),
                 paint_rect.height(),
                 bitmap->memory(),
                 reinterpret_cast<BITMAPINFO*>(&hdr),
                 DIB_RGB_COLORS,
                 SRCCOPY);
-
-  return true;
 }
 
 void BackingStore::ScrollRect(base::ProcessHandle process,
                               TransportDIB* bitmap,
                               const gfx::Rect& bitmap_rect,
                               int dx, int dy,
                               const gfx::Rect& clip_rect,
                               const gfx::Size& view_size) {
   RECT damaged_rect, r = clip_rect.ToRECT();
   ScrollDC(hdc_, dx, dy, NULL, &r, NULL, &damaged_rect);
@@ skipping 28 matching lines @@
     gfx::CreateBitmapHeaderWithColorDepth(width, height, color_depth, &hdr);
   } else {
     gfx::CreateBitmapHeader(width, height, &hdr);
   }
   void* data = NULL;
   HANDLE dib =
       CreateDIBSection(hdc_, reinterpret_cast<BITMAPINFO*>(&hdr),
                        0, &data, section, 0);
   return dib;
 }