Reduce the in-memory blob storgae limit on Android

content/browser/indexed_db/indexed_db_browsertest.cc

Index: content/browser/indexed_db/indexed_db_browsertest.cc
diff --git a/content/browser/indexed_db/indexed_db_browsertest.cc b/content/browser/indexed_db/indexed_db_browsertest.cc
index f4e7668c24615722a82f6fe7c73ed192548395d6..0fd696b629096aff1f4a4a1dfac840a333325c8f 100644
--- a/content/browser/indexed_db/indexed_db_browsertest.cc
+++ b/content/browser/indexed_db/indexed_db_browsertest.cc
@@ -489,10 +489,10 @@ IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, BlobsCountAgainstQuota) {
 }
 
 IN_PROC_BROWSER_TEST_F(IndexedDBBrowserTest, DeleteForOriginDeletesBlobs) {
-  SimpleTest(GetTestUrl("indexeddb", "write_20mb_blob.html"));
+  SimpleTest(GetTestUrl("indexeddb", "write_4mb_blob.html"));

[jsbell, 2017/05/04 22:11:37]

If you wanted to get fancy we could make this parameterized:
write_blob_mbs.html#4

... and then in the script use Number(document.location.hash.substring(1)) *
1024 * 1024

[ssid, 2017/05/05 00:34:23]

hm actually changing the file name causes the test unable to read the file.
(content::GetTestFilePath does not split the name).

[jsbell, 2017/05/05 18:53:05]

huh. It looked like we used that pattern elsewhere but maybe it requires more
refactoring.

Anyway, glad this is in, we can tweak it later.

\o/

   int64_t size = RequestDiskUsage();
   // This assertion assumes that we do not compress blobs.
-  EXPECT_GT(size, 20 << 20 /* 20 MB */);
+  EXPECT_GT(size, 4 << 20 /* 4 MB */);
   // TODO(jsbell): Remove static_cast<> when overloads are eliminated.
   GetContext()->TaskRunner()->PostTask(
       FROM_HERE,