Move discardable memory to //components from //content

content/common/BUILD.gn

Index: content/common/BUILD.gn
diff --git a/content/common/BUILD.gn b/content/common/BUILD.gn
index 7f1791635b1647ad02a7fc2e442a15a2bab01223..d975ab3914f67f774ed7f9ac288bfa48b38729c0 100644
--- a/content/common/BUILD.gn
+++ b/content/common/BUILD.gn
@@ -93,8 +93,6 @@ source_set("common") {
     "database_messages.h",
     "date_time_suggestion.h",
     "devtools_messages.h",
-    "discardable_shared_memory_heap.cc",
-    "discardable_shared_memory_heap.h",
     "dom_storage/dom_storage_map.cc",
     "dom_storage/dom_storage_map.h",
     "dom_storage/dom_storage_messages.h",
@@ -135,8 +133,6 @@ source_set("common") {
     "gpu/client/context_provider_command_buffer.cc",
     "gpu/client/context_provider_command_buffer.h",
     "gpu_host_messages.h",
-    "host_discardable_shared_memory_manager.cc",
-    "host_discardable_shared_memory_manager.h",
     "host_shared_bitmap_manager.cc",
     "host_shared_bitmap_manager.h",
     "in_process_child_thread_params.cc",
@@ -356,6 +352,7 @@ source_set("common") {
     "//build/util:webkit_version",
     "//cc/ipc",
     "//cc/surfaces",
+    "//components/discardable_memory/common",
     "//components/tracing",
     "//components/tracing:startup_tracing",
     "//content:resources",