Add logic to block the use of client 3D APIs (WebGL, Pepper 3D) if context lost notifications are r…

content/public/browser/gpu_data_manager.h

 // 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_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
 #define CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_
 
 #include <string>
 
 #include "content/common/content_export.h"
 #include "content/public/common/gpu_feature_type.h"
 #include "content/public/common/gpu_switching_option.h"
 
 class FilePath;
+class GURL;
 
 namespace base {
 class ListValue;
 }
 
 namespace content {
 
 class GpuDataManagerObserver;
 struct GPUInfo;
 
 // This class is fully thread-safe.
 class GpuDataManager {
  public:
+  // Indicates the guilt level of a domain which caused a GPU reset.
+  // If a domain is 100% known to be guilty of resetting the GPU, then
+  // it will generally not cause other domains' use of 3D APIs to be
+  // blocked, unless system stability would be compromised.
+  enum DomainGuilt {
+    DOMAIN_GUILT_KNOWN,
+    DOMAIN_GUILT_UNKNOWN
+  };
+
+  // Indicates the reason that access to a given client API (like
+  // WebGL or Pepper 3D) was blocked or not. This state is distinct
+  // from blacklisting of an entire feature.
+  enum DomainBlockStatus {
+    DOMAIN_BLOCK_STATUS_BLOCKED,
+    DOMAIN_BLOCK_STATUS_ALL_DOMAINS_BLOCKED,
+    DOMAIN_BLOCK_STATUS_NOT_BLOCKED
+  };
+
   // Getter for the singleton.
   CONTENT_EXPORT static GpuDataManager* GetInstance();
 
   virtual void InitializeForTesting(const std::string& gpu_blacklist_json,
                                     const content::GPUInfo& gpu_info) = 0;
 
   virtual std::string GetBlacklistVersion() const = 0;
 
   virtual GpuFeatureType GetBlacklistedFeatures() const = 0;
 
@@ skipping 39 matching lines @@
 
   // Registers/unregister |observer|.
   virtual void AddObserver(GpuDataManagerObserver* observer) = 0;
   virtual void RemoveObserver(GpuDataManagerObserver* observer) = 0;
 
   // Notifies the gpu process about the number of browser windows, so
   // they can be used to determine managed memory allocation.
   virtual void SetWindowCount(uint32 count) = 0;
   virtual uint32 GetWindowCount() const = 0;
 
+  // Maintenance of domains requiring explicit user permission before
+  // using client-facing 3D APIs (WebGL, Pepper 3D), either because
+  // the domain has caused the GPU to reset, or because too many GPU
+  // resets have been observed globally recently, and system stability
+  // might be compromised.
+  //
+  // The given URL may be a partial URL (including at least the host)
+  // or a full URL to a page.
+  virtual void BlockDomainFrom3DAPIs(const GURL& url, DomainGuilt guilt) = 0;
+  virtual DomainBlockStatus Are3DAPIsBlocked(
+      const GURL& url) const = 0;
+  virtual void UnblockDomainFrom3DAPIs(const GURL& url) = 0;
+  // Disables domain blocking. For use only in tests.
+  virtual void DisableDomainBlockingFor3DAPIsForTesting() = 0;
+
  protected:
   virtual ~GpuDataManager() {}
 };
 
 };  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_GPU_DATA_MANAGER_H_