Initial commit of the blimp/ folder and target

blimp/client/compositor/blimp_context_provider.h

 // Copyright 2015 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 ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_
-#define ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_
+#ifndef BLIMP_CLIENT_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_
+#define BLIMP_CLIENT_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
 #include "cc/output/context_provider.h"
-#include "gpu/command_buffer/service/in_process_command_buffer.h"
+#include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "skia/ext/refptr.h"
+#include "ui/gl/gl_surface.h"
 
-namespace gfx {
-class GLSurface;
-}
+namespace blimp {
 
-namespace gpu {
-class GLInProcessContext;
-}
+// Helper class to provide a graphics context for the compositor.
+class BlimpContextProvider : public cc::ContextProvider {
+ public:
+  static scoped_refptr<BlimpContextProvider> Create(
+      gfx::AcceleratedWidget widget);
 
-namespace android_webview {
-
-class AwRenderThreadContextProvider : public cc::ContextProvider {
- public:
-  static scoped_refptr<AwRenderThreadContextProvider> Create(
-      scoped_refptr<gfx::GLSurface> surface,
-      scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
-
- private:
-  AwRenderThreadContextProvider(
-      scoped_refptr<gfx::GLSurface> surface,
-      scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
-  ~AwRenderThreadContextProvider() override;
-
-  // cc::ContextProvider:
+  // cc::ContextProvider implementation.
   bool BindToCurrentThread() override;
+  void DetachFromThread() override;
   Capabilities ContextCapabilities() override;
   gpu::gles2::GLES2Interface* ContextGL() override;
   gpu::ContextSupport* ContextSupport() override;
   class GrContext* GrContext() override;
   void InvalidateGrContext(uint32_t state) override;
   void SetupLock() override;
   base::Lock* GetLock() override;
   void VerifyContexts() override;
   void DeleteCachedResources() override;
   bool DestroyedOnMainThread() override;
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override;
   void SetMemoryPolicyChangedCallback(
       const MemoryPolicyChangedCallback& memory_policy_changed_callback)
       override;
 
+ protected:
+  explicit BlimpContextProvider(gfx::AcceleratedWidget widget);
+  ~BlimpContextProvider() override;
+
+ private:
   void OnLostContext();
 
   base::ThreadChecker main_thread_checker_;
+  base::ThreadChecker context_thread_checker_;
 
+  base::Lock context_lock_;
   scoped_ptr<gpu::GLInProcessContext> context_;
   skia::RefPtr<class GrContext> gr_context_;
 
   cc::ContextProvider::Capabilities capabilities_;
 
   LostContextCallback lost_context_callback_;
 
+  base::Lock destroyed_lock_;
   bool destroyed_;
 
-  base::Lock context_lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(AwRenderThreadContextProvider);
+  DISALLOW_COPY_AND_ASSIGN(BlimpContextProvider);
 };
 
-}  // namespace android_webview
+}  // namespace blimp
 
-#endif  // ANDROID_WEBVIEW_BROWSER_AW_RENDER_THREAD_CONTEXT_PROVIDER_H_
+#endif  // BLIMP_CLIENT_COMPOSITOR_BLIMP_CONTEXT_PROVIDER_H_