components/image_fetcher: Add a from_http_cache flag to RequestMetadata

components/image_fetcher/request_metadata_unittest.cc

Index: components/image_fetcher/request_metadata_unittest.cc
diff --git a/components/image_fetcher/request_metadata_unittest.cc b/components/image_fetcher/request_metadata_unittest.cc
index ba87ba08d8f400109c3ded47e2f8cb3f14696f65..bfda964665e32834f02ee16db43c65ac435016fc 100644
--- a/components/image_fetcher/request_metadata_unittest.cc
+++ b/components/image_fetcher/request_metadata_unittest.cc
@@ -13,8 +13,10 @@ TEST(RequestMetadataTest, Equality) {
   RequestMetadata lhs;
   rhs.mime_type = "testMimeType";
   lhs.mime_type = "testMimeType";
-  rhs.response_code = 1;
-  lhs.response_code = 1;
+  rhs.http_response_code = 1;
+  lhs.http_response_code = 1;
+  rhs.from_http_cache = true;
+  lhs.from_http_cache = true;
 
   EXPECT_EQ(rhs, lhs);
 }
@@ -24,16 +26,22 @@ TEST(RequestMetadataTest, NoEquality) {
   RequestMetadata lhs;
   rhs.mime_type = "testMimeType";
   lhs.mime_type = "testMimeType";
-  rhs.response_code = 1;
-  lhs.response_code = 1;
+  rhs.http_response_code = 1;
+  lhs.http_response_code = 1;
+  rhs.from_http_cache = true;
+  lhs.from_http_cache = true;
 
   lhs.mime_type = "testOtherMimeType";
   EXPECT_NE(rhs, lhs);
   lhs.mime_type = "testMimeType";
 
-  lhs.response_code = 2;
+  lhs.http_response_code = 2;
   EXPECT_NE(rhs, lhs);
-  lhs.response_code = 1;
+  lhs.http_response_code = 1;
+
+  lhs.from_http_cache = false;
+  EXPECT_NE(rhs, lhs);
+  lhs.from_http_cache = true;
 }
 
 }  // namespace image_fetcher