Android: adds test intents for memory pressure.

content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java

Index: content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java
diff --git a/content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java b/content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java
index 93147632a19ea2a93b179fd100bfbd4217cc5923..a3d4053574b1fe73e4a6155286b0a17cabfbc91b 100644
--- a/content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java
+++ b/content/shell/android/shell_apk/src/org/chromium/content_shell_apk/ContentShellActivity.java
@@ -14,6 +14,7 @@ import android.util.Log;
 import android.view.KeyEvent;
 
 import org.chromium.base.ChromiumActivity;
+import org.chromium.base.MemoryPressureListener;
 import org.chromium.content.app.LibraryLoader;
 import org.chromium.content.browser.ActivityContentVideoViewClient;
 import org.chromium.content.browser.AndroidBrowserProcess;
@@ -44,6 +45,21 @@ public class ContentShellActivity extends ChromiumActivity {
             "org.chromium.content_shell.action.PROFILE_STOP";
     public static final String COMMAND_LINE_ARGS_KEY = "commandLineArgs";
 
+    /**
+     * Sending an intent with this action will simulate a memory pressure signal
+     * at a critical level.
+     */
+    private static final String ACTION_LOW_MEMORY =
+            "org.chromium.content_shell.action.ACTION_LOW_MEMORY";
+
+    /**
+     * Sending an intent with this action will simulate a memory pressure signal
+     * at a moderate level.
+     */
+    private static final String ACTION_TRIM_MEMORY_MODERATE =
+            "org.chromium.content_shell.action.ACTION_TRIM_MEMORY_MODERATE";
+
+
     private ShellManager mShellManager;
     private WindowAndroid mWindowAndroid;
     private BroadcastReceiver mReceiver;
@@ -134,6 +150,14 @@ public class ContentShellActivity extends ChromiumActivity {
             Log.i(TAG, "Ignoring command line params: can only be set when creating the activity.");
         }
 
+        if (ACTION_LOW_MEMORY.equals(intent.getAction())) {
+            MemoryPressureListener.simulateMemoryPressureSignal(TRIM_MEMORY_COMPLETE);
+            return;
+        } else if (ACTION_TRIM_MEMORY_MODERATE.equals(intent.getAction())) {
+            MemoryPressureListener.simulateMemoryPressureSignal(TRIM_MEMORY_MODERATE);
+            return;
+        }
+
         String url = getUrlFromIntent(intent);
         if (!TextUtils.isEmpty(url)) {
             Shell activeView = getActiveShell();