Adds kind-of-live thumbnail generation for a potential tab switcher.

chrome/renderer/render_process.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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <objidl.h>
 #include <mlang.h>
@@ skipping 118 matching lines @@
   return command_line.HasSwitch(switches::kInProcessPlugins);
 #else
   return command_line.HasSwitch(switches::kInProcessPlugins) ||
          command_line.HasSwitch(switches::kSingleProcess);
 #endif
 }
 
 // -----------------------------------------------------------------------------
 // Platform specific code for dealing with bitmap transport...
 
-// -----------------------------------------------------------------------------
-// Create a platform canvas object which renders into the given transport
-// memory.
-// -----------------------------------------------------------------------------
-static skia::PlatformCanvas* CanvasFromTransportDIB(
-    TransportDIB* dib, const gfx::Rect& rect) {
-#if defined(OS_WIN)
-  return new skia::PlatformCanvas(rect.width(), rect.height(), true,
-                                  dib->handle());
-#elif defined(OS_LINUX) || defined(OS_MACOSX)
-  return new skia::PlatformCanvas(rect.width(), rect.height(), true,
-                                  reinterpret_cast<uint8_t*>(dib->memory()));
-#endif
-}
-
 TransportDIB* RenderProcess::CreateTransportDIB(size_t size) {
 #if defined(OS_WIN) || defined(OS_LINUX)
   // Windows and Linux create transport DIBs inside the renderer
   return TransportDIB::Create(size, sequence_number_++);
 #elif defined(OS_MACOSX)  // defined(OS_WIN) || defined(OS_LINUX)
   // Mac creates transport DIBs in the browser, so we need to do a sync IPC to
   // get one.
   TransportDIB::Handle handle;
   IPC::Message* msg = new ViewHostMsg_AllocTransportDIB(size, &handle);
   if (!child_thread()->Send(msg))
@@ skipping 25 matching lines @@
     TransportDIB** memory, const gfx::Rect& rect) {
   const size_t stride = skia::PlatformCanvas::StrideForWidth(rect.width());
   const size_t size = stride * rect.height();
 
   if (!GetTransportDIBFromCache(memory, size)) {
     *memory = CreateTransportDIB(size);
     if (!*memory)
       return false;
   }
 
-  return CanvasFromTransportDIB(*memory, rect);
+  return (*memory)->GetPlatformCanvas(rect.width(), rect.height());
 }
 
 void RenderProcess::ReleaseTransportDIB(TransportDIB* mem) {
   if (PutSharedMemInCache(mem)) {
     shared_mem_cache_cleaner_.Reset();
     return;
   }
 
   FreeTransportDIB(mem);
 }
@@ skipping 51 matching lines @@
 }
 
 void RenderProcess::ClearTransportDIBCache() {
   for (size_t i = 0; i < arraysize(shared_mem_cache_); ++i) {
     if (shared_mem_cache_[i]) {
       FreeTransportDIB(shared_mem_cache_[i]);
       shared_mem_cache_[i] = NULL;
     }
   }
 }