Class/struct layout optimization for blink Resource related classes

third_party/WebKit/public/platform/WebURLRequest.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebURLRequest_h
 #define WebURLRequest_h
 
+#include <memory>
 #include "WebAddressSpace.h"
+#include "WebCachePolicy.h"
 #include "WebCommon.h"
 #include "WebHTTPBody.h"
 #include "WebReferrerPolicy.h"
-#include <memory>
 
 namespace blink {
 
 class ResourceRequest;
 class WebHTTPBody;
 class WebHTTPHeaderVisitor;
 class WebSecurityOrigin;
 class WebString;
 class WebURL;
-enum class WebCachePolicy;
 
 class WebURLRequest {
  public:
   enum Priority {
     kPriorityUnresolved = -1,
     kPriorityVeryLow,
     kPriorityLow,
     kPriorityMedium,
     kPriorityHigh,
     kPriorityVeryHigh,
   };
 
   // Corresponds to Fetch's "context":
   // http://fetch.spec.whatwg.org/#concept-request-context
-  enum RequestContext {
+  enum RequestContext : uint8_t {
     kRequestContextUnspecified = 0,
     kRequestContextAudio,
     kRequestContextBeacon,
     kRequestContextCSPReport,
     kRequestContextDownload,
     kRequestContextEmbed,
     kRequestContextEventSource,
     kRequestContextFavicon,
     kRequestContextFetch,
     kRequestContextFont,
@@ skipping 18 matching lines @@
     kRequestContextStyle,
     kRequestContextTrack,
     kRequestContextVideo,
     kRequestContextWorker,
     kRequestContextXMLHttpRequest,
     kRequestContextXSLT
   };
 
   // Corresponds to Fetch's "context frame type":
   // http://fetch.spec.whatwg.org/#concept-request-context-frame-type
-  enum FrameType {
+  enum FrameType : uint8_t {
     kFrameTypeAuxiliary,
     kFrameTypeNested,
     kFrameTypeNone,
     kFrameTypeTopLevel
   };
 
-  enum FetchRequestMode {
+  enum FetchRequestMode : uint8_t {
     kFetchRequestModeSameOrigin,
     kFetchRequestModeNoCORS,
     kFetchRequestModeCORS,
     kFetchRequestModeCORSWithForcedPreflight,
     kFetchRequestModeNavigate
   };
 
-  enum FetchCredentialsMode {
+  enum FetchCredentialsMode : uint8_t {
     kFetchCredentialsModeOmit,
     kFetchCredentialsModeSameOrigin,
     kFetchCredentialsModeInclude,
     kFetchCredentialsModePassword
   };
 
-  enum FetchRequestCacheMode {
+  enum FetchRequestCacheMode : uint8_t {
     kFetchRequestCacheModeDefault,
     kFetchRequestCacheModeNoStore,
     kFetchRequestCacheModeReload,
     kFetchRequestCacheModeNoCache,
     kFetchRequestCacheModeForceCache,
     kFetchRequestCacheModeOnlyIfCached
   };
 
-  enum FetchRedirectMode {
+  enum FetchRedirectMode : uint8_t {
     kFetchRedirectModeFollow,
     kFetchRedirectModeError,
     kFetchRedirectModeManual
   };
 
   // Used to report performance metrics timed from the UI action that
   // triggered them (as opposed to navigation start time used in the
   // Navigation Timing API).
-  enum InputToLoadPerfMetricReportPolicy {
+  enum InputToLoadPerfMetricReportPolicy : uint8_t {
     kNoReport,      // Don't report metrics for this WebURLRequest.
     kReportLink,    // Report metrics with UI action link clicked.
     kReportIntent,  // Report metrics with UI action displayed intent.
   };
 
   typedef int PreviewsState;
 
   // The Previews types which determines whether to request a Preview version of
   // the resource.
   enum PreviewsTypes {
@@ skipping 10 matching lines @@
                                      // resource from the server.
     kPreviewsNoTransform = 1 << 4,   // Explicitly forbid Previews
                                      // transformations.
     kPreviewsOff = 1 << 5,  // Request a normal (non-Preview) version of
                             // the resource. Server transformations may
                             // still happen if the page is heavy.
     kPreviewsStateLast = kPreviewsOff
   };
 
   // Indicates which service workers will receive fetch events for this request.
-  enum class ServiceWorkerMode {
+  enum class ServiceWorkerMode : uint8_t {
     // Relevant local and foreign service workers will get a fetch or
     // foreignfetch event for this request.
     kAll,
     // Only relevant foreign service workers will get a foreignfetch event for
     // this request.
     kForeign,
     // Neither local nor foreign service workers will get events for this
     // request.
     kNone
   };
 
-  enum class LoadingIPCType {
+  enum class LoadingIPCType : uint8_t {
     kChromeIPC,
     kMojo,
   };
 
   class ExtraData {
    public:
     virtual ~ExtraData() {}
   };
 
   BLINK_PLATFORM_EXPORT ~WebURLRequest();
@@ skipping 185 matching lines @@
   // instance it contains.
   std::unique_ptr<ResourceRequestContainer> owned_resource_request_;
 
   // Should never be null.
   ResourceRequest* resource_request_;
 };
 
 }  // namespace blink
 
 #endif