base: Increase emulated discardable memory limit.

base/memory/discardable_memory_manager.cc

Index: base/memory/discardable_memory_manager.cc
diff --git a/base/memory/discardable_memory_manager.cc b/base/memory/discardable_memory_manager.cc
index 6ede8a39cf8bbc54659468e7adb520103d2c7898..468690b7c9fe9c7ac24f067f19f62237a5358e73 100644
--- a/base/memory/discardable_memory_manager.cc
+++ b/base/memory/discardable_memory_manager.cc
@@ -14,11 +14,10 @@ namespace base {
 namespace internal {
 namespace {
 
-// This is admittedly pretty magical. It's approximately enough memory for four
+// This is admittedly pretty magical. It's approximately enough memory for eight
 // 2560x1600 images.
-static const size_t kDefaultMemoryLimit = 64 * 1024 * 1024;
-static const size_t kDefaultBytesToKeepUnderModeratePressure =
-    kDefaultMemoryLimit / 4;
+static const size_t kDefaultMemoryLimit = 128 * 1024 * 1024;
+static const size_t kDefaultBytesToKeepUnderModeratePressure = 12 * 1024 * 1024;
 
 }  // namespace