Increase priority of XHR in ResourcePriorities experiment.

third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp

Index: third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp b/third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp
index 182b2bddae84ce790b65dfbc38f714e5e64c6d5f..c000b80742cbc857244ddee763d294e65ee5b7b9 100644
--- a/third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameFetchContextTest.cpp
@@ -477,6 +477,9 @@ TEST_F(FrameFetchContextTest, ModifyPriorityForExperiments)
     // Base case, no priority change. Note that this triggers m_imageFetched, which will matter for setFetchDeferLateScripts() case below.
     EXPECT_EQ(ResourceLoadPriorityVeryLow, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityVeryLow, Resource::Image, request, ResourcePriority::NotVisible));
 
+    // RAW (XHR/Fetch) should default to Medium with no experiments running
+    EXPECT_EQ(ResourceLoadPriorityMedium, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityMedium, Resource::Raw, request, ResourcePriority::NotVisible));
+
     // Image visibility should increase priority
     EXPECT_EQ(ResourceLoadPriorityLow, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityVeryLow, Resource::Image, request, ResourcePriority::Visible));
 
@@ -505,6 +508,9 @@ TEST_F(FrameFetchContextTest, ModifyPriorityForExperiments)
     EXPECT_EQ(ResourceLoadPriorityLow, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityVeryLow, Resource::Image, request, ResourcePriority::NotVisible));
     EXPECT_EQ(ResourceLoadPriorityHigh, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityVeryLow, Resource::Image, request, ResourcePriority::Visible));
 
+    // Re-test RAW (XHR/Fetch) with increased priorities
+    EXPECT_EQ(ResourceLoadPriorityHigh, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityMedium, Resource::Raw, request, ResourcePriority::NotVisible));
+
     // Re-test font priority with increased prioriries
     settings->setFEtchIncreaseFontPriority(false);
     EXPECT_EQ(ResourceLoadPriorityHigh, fetchContext->modifyPriorityForExperiments(ResourceLoadPriorityMedium, Resource::Font, request, ResourcePriority::NotVisible));