Initial import.

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diff --git a/chromium/content/renderer/render_process_impl.h b/chromium/content/renderer/render_process_impl.h
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+++ b/chromium/content/renderer/render_process_impl.h
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+// Copyright (c) 2012 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.
+
+#ifndef CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_
+#define CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_
+
+#include "base/timer/timer.h"
+#include "content/renderer/render_process.h"
+
+class SkCanvas;
+
+namespace content {
+
+// Implementation of the RenderProcess interface for the regular browser.
+// See also MockRenderProcess which implements the active "RenderProcess" when
+// running under certain unit tests.
+class RenderProcessImpl : public RenderProcess {
+ public:
+  RenderProcessImpl();
+  virtual ~RenderProcessImpl();
+
+  // RenderProcess implementation.
+  virtual SkCanvas* GetDrawingCanvas(
+      TransportDIB** memory,
+      const gfx::Rect& rect) OVERRIDE;
+  virtual void ReleaseTransportDIB(TransportDIB* memory) OVERRIDE;
+  virtual bool UseInProcessPlugins() const OVERRIDE;
+  virtual void AddBindings(int bindings) OVERRIDE;
+  virtual int GetEnabledBindings() const OVERRIDE;
+  virtual TransportDIB* CreateTransportDIB(size_t size) OVERRIDE;
+  virtual void FreeTransportDIB(TransportDIB*) OVERRIDE;
+
+  // Like UseInProcessPlugins(), but called before RenderProcess is created
+  // and does not allow overriding by tests. This just checks the command line
+  // each time.
+  static bool InProcessPlugins();
+
+ private:
+  // Look in the shared memory cache for a suitable object to reuse.
+  //   result: (output) the memory found
+  //   size: the resulting memory will be >= this size, in bytes
+  //   returns: false if a suitable DIB memory could not be found
+  bool GetTransportDIBFromCache(TransportDIB** result, size_t size);
+
+  // Maybe put the given shared memory into the shared memory cache. Returns
+  // true if the SharedMemory object was stored in the cache; otherwise, false
+  // is returned.
+  bool PutSharedMemInCache(TransportDIB* memory);
+
+  void ClearTransportDIBCache();
+
+  // Return the index of a free cache slot in which to install a transport DIB
+  // of the given size. If all entries in the cache are larger than the given
+  // size, this doesn't free any slots and returns -1.
+  int FindFreeCacheSlot(size_t size);
+
+  // A very simplistic and small cache.  If an entry in this array is non-null,
+  // then it points to a SharedMemory object that is available for reuse.
+  TransportDIB* shared_mem_cache_[2];
+
+  // This DelayTimer cleans up our cache 5 seconds after the last use.
+  base::DelayTimer<RenderProcessImpl> shared_mem_cache_cleaner_;
+
+  // TransportDIB sequence number
+  uint32 transport_dib_next_sequence_number_;
+
+  bool in_process_plugins_;
+
+  // Bitwise-ORed set of extra bindings that have been enabled anywhere in this
+  // process.  See BindingsPolicy for details.
+  int enabled_bindings_;
+
+  DISALLOW_COPY_AND_ASSIGN(RenderProcessImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_RENDER_PROCESS_IMPL_H_