Adding flag to specify the used memory pressure strategy

chrome/app/chromeos_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- ChromeOS-specific strings (included from generated_resources.grd).
      Everything in this file is wrapped in <if expr="chromeos">. -->
 <grit-part>
   <message name="IDS_EMPTY_STRING" desc="Empty string, exist only to make code generic. No translation required.">
   </message>
   <message name="IDS_CHROMEBOOK" desc="The localized name for Chromebook.">
     Chromebook
   </message>
   <message name="IDS_CHROMEBOX" desc="The localized name for Chromebox">
@@ skipping 1114 matching lines @@
   </message>
   <message name="IDS_FLAGS_DISABLE_DISPLAY_COLOR_CALIBRATION_DESCRIPTION" desc="Description for the flag to disable the color calibration of the display.">
     Disable calibrating the color of the display even if the display supports the feature.
   </message>
   <message name="IDS_FLAGS_DISABLE_MEMORY_PRESSURE_NAME" desc="Name for the flag to disable memory pressure handling on ChromeOS.">
     Disable memory pressure handling
   </message>
   <message name="IDS_FLAGS_DISABLE_MEMORY_PRESSURE_DESCRIPTION" desc="Description for the flag to disable memory pressure handling on ChromeOS.">
     Disable enhanced memory pressure handling on ChromeOS.
   </message>
+  <message name="IDS_FLAGS_MEMORY_PRESSURE_THRESHOLD_NAME" desc="Name for the flag which specifies which memory pressure strategy should be used on ChromeOS.">
+    Memory discard strategy for advanced pressure handling
+  </message>
+  <message name="IDS_FLAGS_MEMORY_PRESSURE_THRESHOLD_DESCRIPTION" desc="Description for the flag which specifies which memory pressure strategy should be used on ChromeOS.">
+    Memory discarding strategy to use
+  </message>
+  <message name="IDS_FLAGS_CONSERVATIVE_THRESHOLDS" desc="The value of the Memory pressure for ChromeOS which requests conservative thresholds.">
+    Conservative memory pressure release strategy
+  </message>
+  <message name="IDS_FLAGS_AGGRESSIVE_CACHE_DISCARD_THRESHOLDS" desc="The value of the Memory pressure thresholds for ChromeOS which use an aggressive cache release strategy.">
+    Aggressive cache release strategy
+  </message>
+  <message name="IDS_FLAGS_AGGRESSIVE_TAB_DISCARD_THRESHOLDS" desc="The value of the Memory pressure thresholds for ChromeOS which uses an aggressive tab release strategy.">
+    Aggressive tab release strategy
+  </message>
+  <message name="IDS_FLAGS_AGGRESSIVE_THRESHOLDS" desc="The value of the Memory pressure thresholds for ChromeOS which use an aggressive release strategy.">
+    Aggressive tab and cache release strategy
+  </message>
   <message name="IDS_FLAGS_WAKE_ON_PACKETS_NAME" desc="Name for the flag to enable wake on packets.">
     Wake On Packets
   </message>
   <message name="IDS_FLAGS_WAKE_ON_PACKETS_DESCRIPTION" desc="Description for the flag to enable wake on packets.">
     Enables waking the device based on the receipt of some network packets.
   </message>
   <message name="IDS_OFFERS_CONSENT_INFOBAR_LABEL_LEARN_MORE" desc="Text of the Learn More link in the echo dialog.">
     Learn More
   </message>
   <message name="IDS_OFFERS_CONSENT_INFOBAR_ENABLE_BUTTON" desc="Enable button label.">
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   <message name="IDS_SET_TIME_BUTTON_CLOSE" desc="Text for the button to close the window.">
     Done
   </message>
   <message name="IDS_SET_TIME_DATE_LABEL" desc="Label for the date input element.">
     System date
   </message>
   <message name="IDS_SET_TIME_TIME_LABEL" desc="Label for the time input element.">
     System time
   </message>
 </grit-part>