Refactor client visibility handling

cc/output/context_provider.h

 // Copyright (c) 2013 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 CC_OUTPUT_CONTEXT_PROVIDER_H_
 #define CC_OUTPUT_CONTEXT_PROVIDER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/synchronization/lock.h"
 #include "cc/base/cc_export.h"
 #include "gpu/command_buffer/common/capabilities.h"
 
 class GrContext;
 
 namespace base {
 class Lock;
 }
 
 namespace gpu {
 class ContextSupport;
 namespace gles2 { class GLES2Interface; }
 }
 
 namespace cc {
+class ContextCacheController;
 struct ManagedMemoryPolicy;
 
 class ContextProvider : public base::RefCountedThreadSafe<ContextProvider> {
  public:
   // Hold an instance of this lock while using a context across multiple
   // threads. This only works for ContextProviders that will return a valid
   // lock from GetLock(), so is not always supported. Most use of
   // ContextProvider should be single-thread only on the thread that
   // BindToCurrentThread is run on.
   class ScopedContextLock {
@@ skipping 22 matching lines @@
   // accessing the contexts. Calling it more than once should have no effect.
   // Once this function has been called, the class should only be accessed
   // from the same thread unless the function has some explicitly specified
   // rules for access on a different thread. See SetupLockOnMainThread(), which
   // can be used to provide access from multiple threads.
   virtual bool BindToCurrentThread() = 0;
 
   virtual gpu::gles2::GLES2Interface* ContextGL() = 0;
   virtual gpu::ContextSupport* ContextSupport() = 0;
   virtual class GrContext* GrContext() = 0;
+  virtual ContextCacheController* CacheController() = 0;
 
   // Invalidates the cached OpenGL state in GrContext.
   // See skia GrContext::resetContext for details.
   virtual void InvalidateGrContext(uint32_t state) = 0;
 
   // Returns the capabilities of the currently bound 3d context.
   virtual gpu::Capabilities ContextCapabilities() = 0;
 
-  // Delete all cached gpu resources.
-  virtual void DeleteCachedResources() = 0;
-
   // Sets a callback to be called when the context is lost. This should be
   // called from the same thread that the context is bound to. To avoid races,
   // it should be called before BindToCurrentThread().
   typedef base::Closure LostContextCallback;
   virtual void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) = 0;
 
   // Below are helper methods for ScopedContextLock. Use that instead of calling
   // these directly.
   //
   // Detaches debugging thread checkers to allow use of the provider from the
   // current thread. This can be called on any thread.
   virtual void DetachFromThread() {}
   // Returns the lock that should be held if using this context from multiple
   // threads. This can be called on any thread.
   virtual base::Lock* GetLock() = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<ContextProvider>;
   virtual ~ContextProvider() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_CONTEXT_PROVIDER_H_