Adding condition attributes for request headers to Declarative WebRequest

chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h

Index: chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h
diff --git a/chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h b/chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h
index cc5d2518e12746e82ef3fda3903e03f2cf3d99cc..50bbb116703c0bfad9941df6a214eb0bc866addd 100644
--- a/chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h
+++ b/chrome/browser/extensions/api/declarative_webrequest/webrequest_condition_attribute.h
@@ -36,6 +36,7 @@ class WebRequestConditionAttribute {
   enum Type {
     CONDITION_RESOURCE_TYPE,
     CONDITION_CONTENT_TYPE,
+    CONDITION_REQUEST_HEADERS,
     CONDITION_RESPONSE_HEADERS
   };
 
@@ -138,6 +139,40 @@ class WebRequestConditionAttributeContentType
   DISALLOW_COPY_AND_ASSIGN(WebRequestConditionAttributeContentType);
 };
 
+// Condition attribute for matching against request headers. Uses HeaderMatcher
+// to handle the actual tests, in connection with a boolean positiveness
+// flag. If that flag is set to true, then IsFulfilled() returns true iff
+// |header_matcher_| matches at least one header. Otherwise IsFulfilled()
+// returns true iff the |header_matcher_| matches no header.
+class WebRequestConditionAttributeRequestHeaders
+    : public WebRequestConditionAttribute {
+ public:
+  virtual ~WebRequestConditionAttributeRequestHeaders();
+
+  static bool IsMatchingType(const std::string& instance_type);
+
+  // Factory method, see WebRequestConditionAttribute::Create.
+  static scoped_ptr<WebRequestConditionAttribute> Create(
+      const std::string& name,
+      const base::Value* value,
+      std::string* error);
+
+  // Implementation of WebRequestConditionAttribute:
+  virtual int GetStages() const OVERRIDE;
+  virtual bool IsFulfilled(
+      const WebRequestRule::RequestData& request_data) const OVERRIDE;
+  virtual Type GetType() const OVERRIDE;
+
+ private:
+  WebRequestConditionAttributeRequestHeaders(
+      scoped_ptr<const HeaderMatcher>* header_matcher, bool positive);
+
+  const scoped_ptr<const HeaderMatcher> header_matcher_;
+  const bool positive_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebRequestConditionAttributeRequestHeaders);
+};
+
 // Condition attribute for matching against response headers. Uses HeaderMatcher
 // to handle the actual tests, in connection with a boolean positiveness
 // flag. If that flag is set to true, then IsFulfilled() returns true iff