Remove WGC3D::isContextLost references from cc

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 "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
@@ skipping 11 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.
   virtual bool BindToCurrentThread() = 0;
 
   virtual WebKit::WebGraphicsContext3D* Context3d() = 0;
   virtual gpu::ContextSupport* ContextSupport() = 0;
   virtual class GrContext* GrContext() = 0;
 
   struct Capabilities {
-    bool bind_uniform_location;
     bool discard_backbuffer;
     bool egl_image_external;
     bool fast_npot_mo8_textures;
     bool iosurface;
     bool map_image;
     bool map_sub;
     bool post_sub_buffer;
     bool set_visibility;
     bool shallow_flush;
     bool swapbuffers_complete_callback;
     bool texture_format_bgra8888;
     bool texture_format_etc1;
     bool texture_rectangle;
     bool texture_storage;
     bool texture_usage;
     bool discard_framebuffer;
     size_t max_transfer_buffer_usage_bytes;
 
     CC_EXPORT Capabilities();
   };
   // Returns the capabilities of the currently bound 3d context.
   virtual Capabilities ContextCapabilities() = 0;
 
+  // Checks if the context is currently known to be lost.
+  virtual bool IsContextLost() = 0;
+
   // Ask the provider to check if the contexts are valid or lost. If they are,
   // this should invalidate the provider so that it can be replaced with a new
   // one.
   virtual void VerifyContexts() = 0;
 
   // A method to be called from the main thread that should return true if
   // the context inside the provider is no longer valid.
   virtual bool DestroyedOnMainThread() = 0;
 
   // Sets a callback to be called when the context is lost. This should be
@@ skipping 18 matching lines @@
       const MemoryPolicyChangedCallback& memory_policy_changed_callback) = 0;
 
  protected:
   friend class base::RefCountedThreadSafe<ContextProvider>;
   virtual ~ContextProvider() {}
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_CONTEXT_PROVIDER_H_