Edit optimization guide proto for public HTTPS image compression.

Bug: 1036490
Change-Id: I5bd567c66f43e5c8c1b4149e6f05125c7ccf9700
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1988717
Commit-Queue: Xing Xu <xingx@chromium.org>
Reviewed-by: Sophie Chang <sophiechang@chromium.org>
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729836}

components/optimization_guide/hints_processing_util.cc

@@ -39,6 +39,8 @@ std::string GetStringNameForOptimizationType(
       return "PerformanceHints";
     case proto::OptimizationType::LITE_PAGE:
       return "LitePage";
+    case proto::OptimizationType::COMPRESS_PUBLIC_IMAGES:
+      return "CompressPublicImages";
   }
   NOTREACHED();
   return std::string();

components/optimization_guide/proto/BUILD.gn

@@ -12,5 +12,6 @@ proto_library("optimization_guide_proto") {
     "models.proto",
     "performance_hints_metadata.proto",
     "previews_metadata.proto",
+    "public_image_metadata.proto",
   ]
 }

components/optimization_guide/proto/hints.proto

@@ -10,6 +10,7 @@ package optimization_guide.proto;
 import "common_types.proto";
 import "performance_hints_metadata.proto";
 import "previews_metadata.proto";
+import "public_image_metadata.proto";
 
 // Information about the hint that the client already has for a host.
 message MatchedHintInfo {
@@ -127,6 +128,8 @@ enum OptimizationType {
   // This optimization allows page loads going through the data reduction
   // proxy to be transformed by the proxy.
   LITE_PAGE = 7;
+  // This optimization compresses public images.
+  COMPRESS_PUBLIC_IMAGES = 8;
 }
 
 // Presents semantics for how page load URLs should be matched.
@@ -189,6 +192,7 @@ message Optimization {
   oneof metadata {
     PreviewsMetadata previews_metadata = 10;
     PerformanceHintsMetadata performance_hints_metadata = 11;
+    PublicImageMetadata public_image_metadata = 12;
   }
 }
 

components/optimization_guide/proto/public_image_metadata.proto

+// Copyright 2020 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+
+package optimization_guide.proto;
+
+// Optimization metadata for compressing public images.
+//
+// This is populated for optimization type COMPRESS_PUBLIC_IMAGES.
+message PublicImageMetadata {
+  repeated string url = 1;
+}

tools/metrics/histograms/histograms.xml

@@ -183457,6 +183457,7 @@ regressions. -->
 </histogram_suffixes>
 
 <histogram_suffixes name="OptimizationGuide.OptimizationTypes" separator=".">
+  <suffix name="CompressPublicImages" label="Compresses public images"/>
   <suffix name="DeferAllScript" label="Defers execution of script"/>
   <suffix name="LitePage"
       label="HTTP server preview (served from the Data Reduction Proxy)"/>