[net]: Disable SdchOwner's MemoryPressureListener to investigate http://crbug.com/447208.

BUG=447208
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/962313003

Cr-Commit-Position: refs/heads/master@{#318575}

net/sdch/sdch_owner.cc

@@ -87,17 +87,14 @@ SdchOwner::SdchOwner(net::SdchManager* sdch_manager,
       total_dictionary_bytes_(0),
       clock_(new base::DefaultClock),
       max_total_dictionary_size_(kMaxTotalDictionarySize),
-      min_space_for_dictionary_fetch_(kMinSpaceForDictionaryFetch),
+      min_space_for_dictionary_fetch_(kMinSpaceForDictionaryFetch)
+      // TODO(rmcilroy) Add back memory_pressure_listener_ when
+      // http://crbug.com/447208 is fixed
 #if defined(OS_CHROMEOS)
       // For debugging http://crbug.com/454198; remove when resolved.
-      destroyed_(0),
+      , destroyed_(0)
 #endif
-      memory_pressure_listener_(
-          base::Bind(&SdchOwner::OnMemoryPressure,
-                     // Because |memory_pressure_listener_| is owned by
-                     // SdchOwner, the SdchOwner object will be available
-                     // for the lifetime of |memory_pressure_listener_|.
-                     base::Unretained(this))) {
+      {
 #if defined(OS_CHROMEOS)
   // For debugging http://crbug.com/454198; remove when resolved.
   CHECK(clock_.get());

net/sdch/sdch_owner.h

@@ -92,7 +92,8 @@ class NET_EXPORT SdchOwner : public net::SdchObserver {
   unsigned int destroyed_;
 #endif
 
-  base::MemoryPressureListener memory_pressure_listener_;
+  // TODO(rmcilroy) Add back memory_pressure_listener_ when
+  // http://crbug.com/447208 is fixed
 
   DISALLOW_COPY_AND_ASSIGN(SdchOwner);
 };

net/sdch/sdch_owner_unittest.cc

@@ -461,7 +461,9 @@ TEST_F(SdchOwnerTest, ClearReturnsSpace) {
 }
 
 // Confirm memory pressure gets all the space back.
-TEST_F(SdchOwnerTest, MemoryPressureReturnsSpace) {
+// TODO(rmcilroy) Disabled while investigating http://crbug.com/447208 -
+// re-enable once fixed.
+TEST_F(SdchOwnerTest, DISABLED_MemoryPressureReturnsSpace) {
   std::string server_hash_d1;
   std::string server_hash_d2;