Switch src: Local() font matching on by default

The feature has been tested at 50% in beta. Before marking it as rolled
out for 100% in the experimentation configuration, activate it to
100% on ToT.

Bug: 627143, 828317
Change-Id: I8824ef67c48846533d30f0b5416bcc184354dbcb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1752829
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Auto-Submit: Dominik Röttsches <drott@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687692}

content/public/common/content_features.cc

@@ -158,7 +158,7 @@ const base::Feature kFeaturePolicyForSandbox{"FeaturePolicyForSandbox",
 // font name or postscript name. Rolling out behind a flag, as enabling this
 // enables a font indexer on Android which we need to test in the field first.
 const base::Feature kFontSrcLocalMatching{"FontSrcLocalMatching",
-                                          base::FEATURE_DISABLED_BY_DEFAULT};
+                                          base::FEATURE_ENABLED_BY_DEFAULT};
 
 // Enables scrollers inside Blink to store scroll offsets in fractional
 // floating-point numbers rather than truncating to integers.

third_party/blink/web_tests/fast/css/font-face-character-fallback.html

@@ -5,13 +5,13 @@
   font-family: 'test';
   font-weight: 400;
   unicode-range: U+0020, U+0041-005A;  /* space, A-Z */
-  src: local('Helvetica'), local('Arial');
+  src: local('Helvetica'), local('Arial'), local(Arimo Regular);
 }
 @font-face {
   font-family: 'test';
   font-weight: 700;
   unicode-range: U+0061-007A;  /* a-z */
-  src: local('Times'), local('Times New Roman');
+  src: local('Times'), local('Times Roman'), local('Times New Roman'), local('Tinos Regular');
 }
 span {
   font-family: 'test', 'Courier', 'Courier New';

third_party/blink/web_tests/fast/css/font-face-descending-unicode-range.html

@@ -5,7 +5,7 @@
 <style>
 @font-face {
     font-family: 'myfont';
-    src: local(Courier), local('Courier New'); /* Use monospace font */
+    src: local(Courier), local('Courier New'), local('Cousine Regular'); /* Use monospace font */
     unicode-range: U+062-60;
 }
 </style>

third_party/blink/web_tests/fast/css/font-face-download-error.html

@@ -11,7 +11,7 @@
 /* Test 0: Download success */
 @font-face {
     font-family:myfont_0;
-    src: local('Courier'), local('Courier New');
+    src: local('Courier'), local('Courier New'), local('Cousine Regular');
 }
 @font-face {
     font-family:myfont_0;
@@ -22,7 +22,7 @@
 /* Test 1: Download error */
 @font-face {
     font-family:myfont_1;
-    src: local('Courier'), local('Courier New');
+    src: local('Courier'), local('Courier New'), local('Cousine Regular');
 }
 @font-face {
     font-family:myfont_1;
@@ -33,7 +33,7 @@
 /* Test 2: Download error followed by success */
 @font-face {
     font-family:myfont_2;
-    src: local('Courier'), local('Courier New');
+    src: local('Courier'), local('Courier New'), local('Cousine Regular');
 }
 @font-face {
     font-family:myfont_2;
@@ -44,11 +44,11 @@
 /* Test 3: Download error followed by existing local font */
 @font-face {
     font-family:myfont_3;
-    src: local('Courier'), local('Courier New');
+    src: local('Courier'), local('Courier New'), local('Cousine Regular');
 }
 @font-face {
     font-family:myfont_3;
-    src: url('resources/DownLoadErrorAhem.otf'), local(Arial);
+    src: url('resources/DownLoadErrorAhem.otf'), local(Arial), local(Arimo Regular);
     unicode-range: u+69; /* 'i' */
 }
 

third_party/blink/web_tests/fast/css/font-face-in-media-rule.html

@@ -5,7 +5,7 @@
     @media screen {
       @font-face {
           font-family: Times;
-          src: local("Arial");
+          src: local("Arial"), local("Arimo Regular");
       }
     }
   

third_party/blink/web_tests/fast/css/font-face-multiple-ranges-for-unicode-range.html

@@ -10,77 +10,77 @@
 /* Test 0: Comma-separated list, which is valid. */
 @font-face {
     font-family:myfont_0;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_0;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69, u+6a; /* 'i' and 'j' */
 }
 
 /* Test 1: Comma-separated list with three elements, which is valid. */
 @font-face {
     font-family:myfont_1;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_1;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69 , u+6a ,u+6c; /* 'i', 'j', and 'l' */
 }
 
 /* Test 2: Comma-separated list with two consecutive commas, which is invalid. */
 @font-face {
     font-family:myfont_2;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_2;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69, , u+6a; /* 'i' and 'j' */
 }
 
 /* Test 3: Comma-separated list with a trailing comma, which is invalid. */
 @font-face {
     font-family:myfont_3;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_3;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69, u+6a,; /* 'i' and 'j' */
 }
 
 /* Test 4: Comma-separated list with a leading comma, which is invalid. */
 @font-face {
     font-family:myfont_4;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_4;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: , u+69, u+6a; /* 'i' and 'j' */
 }
 
 /* Test 5: Space-separated list, which is invalid. */
 @font-face {
     font-family:myfont_5;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_5;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69 u+6a ; /* 'i' and 'j' */
 }
 
 /* Test 6: Slash-separated list, which is invalid. */
 @font-face {
     font-family:myfont_6;
-    src: local('Times New Roman'), local('Times');
+    src: local('Times New Roman'), local('Times'), local(Tinos Regular);
 }
 @font-face {
     font-family:myfont_6;
-    src: local('Courier New'), local('Courier');
+    src: local('Courier New'), local('Courier'), local(Cousine Regular);
     unicode-range: u+69/u+6a; /* 'i' and 'j' */
 }
 

third_party/blink/web_tests/fast/css/font-face-unicode-range-monospace.html

@@ -3,13 +3,13 @@
 <style>
 @font-face {
   font-family: font1;
-  src: local(Courier), local('Courier New'); /* Use monospace font */
+  src: local(Courier), local('Courier New'), local(Cousine Regular); /* Use monospace font */
   unicode-range: U+0041; /* 'A' */
 }
 
 @font-face {
   font-family: font2;
-  src: local(Arial);
+  src: local(Arial), local(Arimo Regular);
   unicode-range: U+006d; /* 'm' */
 }
 

third_party/blink/web_tests/fast/css/fontfaceset-add-remove.html

@@ -4,7 +4,7 @@
 <style>
 @font-face {
     font-family: TestFont;
-    src: local(Arial);
+    src: local(Arial), local(Arimo Regular);
 }
 @font-face {
     font-family: Ahem;

third_party/blink/web_tests/fast/css/fontfaceset-download-error.html

@@ -23,7 +23,7 @@
 /* Test 4: Download error followed by existing local font */
 @font-face {
     font-family: myfont4;
-    src: url('resources/DownLoadErrorAhem.otf'), local('Courier New');
+    src: url('resources/DownLoadErrorAhem.otf'), local('Courier New'), local(Cousine Regular);
 }
 
 /* Test 5: Multiple errors */

third_party/blink/web_tests/fast/css/fontfaceset-multiple-faces.html

@@ -4,7 +4,7 @@
 <style>
 @font-face {
     font-family: TestFont;
-    src: local('Courier New');
+    src: local('Courier New'), local(Cousine Regular);
 }
 
 @font-face {

third_party/blink/web_tests/fast/forms/select-popup/popup-menu-font-face.html

@@ -13,8 +13,8 @@
   <option class="font2">font 2</option>
 </select>
 <script>
-var face1 = new FontFace("TestFont", "local(Arial)");
-var face2 = new FontFace("TestFont 2", "local(Arial)");
+var face1 = new FontFace("TestFont", "local(Arial), local(Arimo Regular)");
+var face2 = new FontFace("TestFont 2", "local(Arial), local(Arimo Regular)");
 document.fonts.add(face1);
 document.fonts.add(face2);
 

third_party/blink/web_tests/fast/inline/vertical-align-with-fallback-fonts.html

@@ -2,7 +2,7 @@
 <style>
 @font-face {
     font-family:T;
-    src:local('Times New Roman');
+    src:local('Times New Roman'), local(Tinos Regular);
     unicode-range:U+41;
 }
 div {

third_party/blink/web_tests/fast/text/capitalize-boundaries.html

 <style type="text/css">

third_party/blink/web_tests/inspector-protocol/layout-fonts/unicode-range-order.js

@@ -53,7 +53,7 @@
 
         @font-face {
             font-family: 'test5';
-            src: local('Times'), local('Tinos-Regular'), local('Times New Roman');
+            src: local('Times'), local('Times Roman'), local('Tinos-Regular'), local('Times New Roman');
         }
         @font-face {
             font-family: 'test5';