Memory-monitor for Mac.

content/browser/memory/test_memory_monitor.h

Index: content/browser/memory/test_memory_monitor.h
diff --git a/content/browser/memory/test_memory_monitor.h b/content/browser/memory/test_memory_monitor.h
index 946aa566dfa551e42142550255b82d793fff7023..be5fe211b18af4a1e652e85eba508a4bf4e4f8a2 100644
--- a/content/browser/memory/test_memory_monitor.h
+++ b/content/browser/memory/test_memory_monitor.h
@@ -14,14 +14,20 @@ namespace content {
 // A delegate that allows mocking the various inputs to MemoryMonitor.
 class TestMemoryMonitorDelegate : public MemoryMonitorDelegate {
  public:
-  TestMemoryMonitorDelegate() : calls_(0) { mem_info_ = {}; }
+  TestMemoryMonitorDelegate() { mem_info_ = {}; }
   ~TestMemoryMonitorDelegate() override;
 
   void GetSystemMemoryInfo(base::SystemMemoryInfoKB* mem_info) override;
+  bool GetSystemMemoryPressure(int* mem_pressure) override;
 
   size_t calls() const { return calls_; }
   void ResetCalls() { calls_ = 0; }
 
+  void SetMemoryPressure(int mem_pressure) {
+    mem_pressure_ = mem_pressure;
+    mem_pressure_valid_ = true;
+  }
+
   void SetTotalMemoryKB(int total_memory_kb) {
     mem_info_.total = total_memory_kb;
   }
@@ -33,7 +39,9 @@ class TestMemoryMonitorDelegate : public MemoryMonitorDelegate {
   base::SystemMemoryInfoKB mem_info_;
 
  private:
-  size_t calls_;
+  int mem_pressure_ = -1;
+  int mem_pressure_valid_ = false;
+  size_t calls_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(TestMemoryMonitorDelegate);
 };