1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef CHROME_COMMON_CHROME_CONTENT_CLIENT_H_
6 #define CHROME_COMMON_CHROME_CONTENT_CLIENT_H_
7 
8 #include <memory>
9 #include <set>
10 #include <string>
11 #include <vector>
12 
13 #include "base/compiler_specific.h"
14 #include "base/files/file_path.h"
15 #include "base/synchronization/lock.h"
16 #include "build/build_config.h"
17 #include "chrome/common/buildflags.h"
18 #include "components/nacl/common/buildflags.h"
19 #include "content/public/common/content_client.h"
20 #include "pdf/buildflags.h"
21 #include "ppapi/buildflags/buildflags.h"
22 
23 #if BUILDFLAG(ENABLE_PLUGINS)
24 #include "content/public/common/pepper_plugin_info.h"
25 #endif
26 
27 namespace embedder_support {
28 class OriginTrialPolicyImpl;
29 }
30 
31 class ChromeContentClient : public content::ContentClient {
32  public:
33 #if defined(GOOGLE_CHROME_BUILD)
34   // |kNotPresent| is a placeholder plugin location for plugins that are not
35   // currently present in this installation of Chrome, but which can be fetched
36   // on-demand and therefore should still appear in navigator.plugins.
37   static const base::FilePath::CharType kNotPresent[];
38 #endif
39 
40 #if BUILDFLAG(ENABLE_NACL)
41   static const base::FilePath::CharType kNaClPluginFileName[];
42 #endif
43 
44   static const char kPDFExtensionPluginName[];
45   static const char kPDFInternalPluginName[];
46   static const base::FilePath::CharType kPDFPluginPath[];
47 
48   ChromeContentClient();
49   ~ChromeContentClient() override;
50 
51   // The methods below are called by child processes to set the function
52   // pointers for built-in plugins. We avoid linking these plugins into
53   // chrome_common because then on Windows we would ship them twice because of
54   // the split DLL.
55 #if BUILDFLAG(ENABLE_NACL)
56   static void SetNaClEntryFunctions(
57       content::PepperPluginInfo::GetInterfaceFunc get_interface,
58       content::PepperPluginInfo::PPP_InitializeModuleFunc initialize_module,
59       content::PepperPluginInfo::PPP_ShutdownModuleFunc shutdown_module);
60 #endif
61 
62 #if BUILDFLAG(ENABLE_PLUGINS) && BUILDFLAG(ENABLE_PDF)
63   static void SetPDFEntryFunctions(
64       content::PepperPluginInfo::GetInterfaceFunc get_interface,
65       content::PepperPluginInfo::PPP_InitializeModuleFunc initialize_module,
66       content::PepperPluginInfo::PPP_ShutdownModuleFunc shutdown_module);
67 #endif
68 
69 #if BUILDFLAG(ENABLE_PLUGINS)
70   // This returns the most recent plugin based on the plugin versions. In the
71   // event of a tie, a debug plugin will be considered more recent than a
72   // non-debug plugin.
73   // It does not make sense to call this on a vector that contains more than one
74   // plugin type. This function may return a nullptr if given an empty vector.
75   // The method is only visible for testing purposes.
76   static content::PepperPluginInfo* FindMostRecentPlugin(
77       const std::vector<std::unique_ptr<content::PepperPluginInfo>>& plugins);
78 #endif
79 
80   void SetActiveURL(const GURL& url, std::string top_origin) override;
81   void SetGpuInfo(const gpu::GPUInfo& gpu_info) override;
82   void AddPepperPlugins(
83       std::vector<content::PepperPluginInfo>* plugins) override;
84   void AddContentDecryptionModules(
85       std::vector<content::CdmInfo>* cdms,
86       std::vector<media::CdmHostFilePath>* cdm_host_file_paths) override;
87   void AddAdditionalSchemes(Schemes* schemes) override;
88   base::string16 GetLocalizedString(int message_id) override;
89   base::string16 GetLocalizedString(int message_id,
90                                     const base::string16& replacement) override;
91   base::StringPiece GetDataResource(int resource_id,
92                                     ui::ScaleFactor scale_factor) override;
93   base::RefCountedMemory* GetDataResourceBytes(int resource_id) override;
94   gfx::Image& GetNativeImageNamed(int resource_id) override;
95   std::string GetProcessTypeNameInEnglish(int type) override;
96   blink::OriginTrialPolicy* GetOriginTrialPolicy() override;
97 #if defined(OS_ANDROID)
98   media::MediaDrmBridgeClient* GetMediaDrmBridgeClient() override;
99 #endif  // OS_ANDROID
100   void ExposeInterfacesToBrowser(
101       scoped_refptr<base::SequencedTaskRunner> io_task_runner,
102       mojo::BinderMap* binders) override;
103 
104  private:
105   // Used to lock when |origin_trial_policy_| is initialized.
106   base::Lock origin_trial_policy_lock_;
107   std::unique_ptr<embedder_support::OriginTrialPolicyImpl> origin_trial_policy_;
108 };
109 
110 #endif  // CHROME_COMMON_CHROME_CONTENT_CLIENT_H_
111