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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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599 GetFrame()->Console().AddMessage(console_message); | 599 GetFrame()->Console().AddMessage(console_message); |
600 } | 600 } |
601 | 601 |
602 void FrameFetchContext::ModifyRequestForCSP(ResourceRequest& resource_request) { | 602 void FrameFetchContext::ModifyRequestForCSP(ResourceRequest& resource_request) { |
603 // Record the latest requiredCSP value that will be used when sending this | 603 // Record the latest requiredCSP value that will be used when sending this |
604 // request. | 604 // request. |
605 GetFrame()->Loader().RecordLatestRequiredCSP(); | 605 GetFrame()->Loader().RecordLatestRequiredCSP(); |
606 GetFrame()->Loader().ModifyRequestForCSP(resource_request, GetDocument()); | 606 GetFrame()->Loader().ModifyRequestForCSP(resource_request, GetDocument()); |
607 } | 607 } |
608 | 608 |
609 float FrameFetchContext::ClientHintsDeviceRAM(int physical_memory_mb) { | |
610 // TODO(fmeawad): The calculations in this method are still evolving as the | |
611 // spec gets updated: https://github.com/WICG/device-ram The reported | |
612 // device-ram is rounded down to next power of 2 in GB. Ex. 3072MB will return | |
613 // 2, and 768MB will return 0.5. | |
614 DCHECK_GT(physical_memory_mb, 0); | |
615 int power = -1; // To compensate of the extra loop iteration. | |
616 // Extract the MSB location. | |
617 while (physical_memory_mb != 0) { | |
618 physical_memory_mb >>= 1; | |
619 power++; | |
620 } | |
Yoav Weiss
2017/05/26 05:44:22
```
int power = 0;
// Extract the MSB location.
wh
fmeawad
2017/05/26 20:13:16
Done. and thank you for your patience.
| |
621 // Restore to the power of 2, and convert to GB. | |
622 return (float)(1 << power) / (float)1024.0; | |
Yoav Weiss
2017/05/26 05:44:22
static_cast<float>() would be better for the first
fmeawad
2017/05/26 20:13:16
Done.
| |
623 } | |
624 | |
609 void FrameFetchContext::AddClientHintsIfNecessary( | 625 void FrameFetchContext::AddClientHintsIfNecessary( |
610 const ClientHintsPreferences& hints_preferences, | 626 const ClientHintsPreferences& hints_preferences, |
611 const FetchParameters::ResourceWidth& resource_width, | 627 const FetchParameters::ResourceWidth& resource_width, |
612 ResourceRequest& request) { | 628 ResourceRequest& request) { |
613 if (!RuntimeEnabledFeatures::clientHintsEnabled() || !GetDocument()) | 629 if (!RuntimeEnabledFeatures::clientHintsEnabled() || !GetDocument()) |
614 return; | 630 return; |
615 | 631 |
632 bool should_send_device_ram = | |
633 GetDocument()->GetClientHintsPreferences().ShouldSendDeviceRAM() || | |
634 hints_preferences.ShouldSendDeviceRAM(); | |
616 bool should_send_dpr = | 635 bool should_send_dpr = |
617 GetDocument()->GetClientHintsPreferences().ShouldSendDPR() || | 636 GetDocument()->GetClientHintsPreferences().ShouldSendDPR() || |
618 hints_preferences.ShouldSendDPR(); | 637 hints_preferences.ShouldSendDPR(); |
619 bool should_send_resource_width = | 638 bool should_send_resource_width = |
620 GetDocument()->GetClientHintsPreferences().ShouldSendResourceWidth() || | 639 GetDocument()->GetClientHintsPreferences().ShouldSendResourceWidth() || |
621 hints_preferences.ShouldSendResourceWidth(); | 640 hints_preferences.ShouldSendResourceWidth(); |
622 bool should_send_viewport_width = | 641 bool should_send_viewport_width = |
623 GetDocument()->GetClientHintsPreferences().ShouldSendViewportWidth() || | 642 GetDocument()->GetClientHintsPreferences().ShouldSendViewportWidth() || |
624 hints_preferences.ShouldSendViewportWidth(); | 643 hints_preferences.ShouldSendViewportWidth(); |
625 | 644 |
645 if (should_send_device_ram) { | |
646 int physical_memory = Platform::Current()->AmountOfPhysicalMemoryMB(); | |
647 request.AddHTTPHeaderField( | |
648 "device-ram", | |
649 AtomicString(String::Number(ClientHintsDeviceRAM(physical_memory)))); | |
650 } | |
651 | |
626 if (should_send_dpr) { | 652 if (should_send_dpr) { |
627 request.AddHTTPHeaderField( | 653 request.AddHTTPHeaderField( |
628 "DPR", AtomicString(String::Number(GetDocument()->DevicePixelRatio()))); | 654 "DPR", AtomicString(String::Number(GetDocument()->DevicePixelRatio()))); |
629 } | 655 } |
630 | 656 |
631 if (should_send_resource_width) { | 657 if (should_send_resource_width) { |
632 if (resource_width.is_set) { | 658 if (resource_width.is_set) { |
633 float physical_width = | 659 float physical_width = |
634 resource_width.width * GetDocument()->DevicePixelRatio(); | 660 resource_width.width * GetDocument()->DevicePixelRatio(); |
635 request.AddHTTPHeaderField( | 661 request.AddHTTPHeaderField( |
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775 std::unique_ptr<WebURLLoader> FrameFetchContext::CreateURLLoader() { | 801 std::unique_ptr<WebURLLoader> FrameFetchContext::CreateURLLoader() { |
776 return GetFrame()->CreateURLLoader(); | 802 return GetFrame()->CreateURLLoader(); |
777 } | 803 } |
778 | 804 |
779 DEFINE_TRACE(FrameFetchContext) { | 805 DEFINE_TRACE(FrameFetchContext) { |
780 visitor->Trace(document_loader_); | 806 visitor->Trace(document_loader_); |
781 BaseFetchContext::Trace(visitor); | 807 BaseFetchContext::Trace(visitor); |
782 } | 808 } |
783 | 809 |
784 } // namespace blink | 810 } // namespace blink |
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