Add ContentSettingsProvider Interface.

chrome/browser/content_settings/content_settings_provider.h

Index: chrome/browser/content_settings/content_settings_provider.h
diff --git a/chrome/browser/content_settings/content_settings_provider.h b/chrome/browser/content_settings/content_settings_provider.h
index e791eaddade8f36ac72730fd3a733fcc4805e030..bdf54a63161cf2d61709723968b1ca313bba9340 100644
--- a/chrome/browser/content_settings/content_settings_provider.h
+++ b/chrome/browser/content_settings/content_settings_provider.h
@@ -8,8 +8,17 @@
 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PROVIDER_H_
 #pragma once
 
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "chrome/browser/content_settings/content_settings_pattern.h"
 #include "chrome/common/content_settings.h"
 
+class GURL;
+
+namespace content_settings {
+
 class DefaultContentSettingsProvider {
  public:
   virtual ~DefaultContentSettingsProvider() {}
@@ -39,4 +48,56 @@ class DefaultContentSettingsProvider {
       ContentSettingsType content_type) const = 0;
 };
 
+struct ContentSettingsRule {
+  ContentSettingsRule() {}
+  ContentSettingsRule(const ContentSettingsPattern& requesting_url_pattern,
+                      const ContentSettingsPattern& embedding_url_pattern,
+                      ContentSetting& setting)
+                          : requesting_url_pattern_(requesting_url_pattern),

[Bernhard Bauer, 2011/01/27 09:54:26]

Nit: The colon should be indented four spaces w/r/t the preceding level, which
is two spaces.

[markusheintz_, 2011/01/27 10:24:37]

Done.

+                            embedding_url_pattern_(embedding_url_pattern),
+                            content_setting_(setting) {}
+
+  const ContentSettingsPattern requesting_url_pattern_;
+  const ContentSettingsPattern embedding_url_pattern_;
+  ContentSetting content_setting_;
+};
+
+typedef std::vector<ContentSettingsRule> ContentSettingsRules;
+
+class ContentSettingsProvider {
+ public:
+  typedef std::string ResourceIdentifier;
+
+  virtual ~ContentSettingsProvider() {}
+
+  virtual bool ContentSettingsTypeIsManaged(
+      ContentSettingsType content_type) = 0;
+
+  // This may be called on any thread.
+  virtual ContentSetting GetContentSetting(
+      const GURL requesting_url,
+      const GURL embedding_url,
+      const ContentSettingsType& content_type,
+      const ResourceIdentifier& resource_identifier) const = 0;
+
+  // This should only be called on the UI thread.
+  virtual void SetContentSetting(
+      const ContentSettingsPattern& requesting_pattern,
+      const ContentSettingsPattern& embedding_pattern,
+      const ContentSettingsType& content_type,
+      const ResourceIdentifier& resource_identifier,
+      ContentSetting content_setting) = 0;
+
+  // This may be called on any thread.
+  virtual void GetAllContentSettingsRules(
+      const ContentSettingsType& content_type,
+      const ResourceIdentifier& resource_identifier,
+      ContentSettingsRules* content_setting_rules) const = 0;
+
+  // This should only be called on the UI thread.
+  virtual void ClearAllContentSettingsRules() = 0;
+};
+
+}  // namespace content_settings
+
 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PROVIDER_H_